- Acid Neutralizing Capacity (ANC; as CaCO3), UNF, TITR -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 90410, MCode: TT040
Dates: 10/01/96 through 09/29/11
Open Data Set

Mean = 23.11 % Relative Standard Deviation = 1.3 Number of Observations = 29 Blind Sample ID = 75DIW-25144 Mean = 10.41 % Relative Standard Deviation = 2.5 Number of Observations = 22 Blind Sample ID = 75DIW-25138 Mean = 15.66 % Relative Standard Deviation = 2.8 Number of Observations = 22 Blind Sample ID = 75DIW-25130 Mean = 19.33 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 75192-25DIW Mean = 37.29 % Relative Standard Deviation = 1.2 Number of Observations = 21 Blind Sample ID = 75190-25DIW Mean = 43.01 % Relative Standard Deviation = 1.8 Number of Observations = 24 Blind Sample ID = 75190-25192 Mean = 65.62 % Relative Standard Deviation = 1.4 Number of Observations = 42 Blind Sample ID = 75188-25DIW Mean = 77.52 % Relative Standard Deviation = 2.1 Number of Observations = 21 Blind Sample ID = 75188-25190 Mean = 39.43 % Relative Standard Deviation = 1.6 Number of Observations = 24 Blind Sample ID = 75186-25DIW Mean = 32.39 % Relative Standard Deviation = 6.5 Number of Observations = 47 Blind Sample ID = 75184-25DIW Mean = 54.99 % Relative Standard Deviation = 0.7 Number of Observations = 23 Blind Sample ID = 75184-25188 Mean = 27.48 % Relative Standard Deviation = 2.3 Number of Observations = 24 Blind Sample ID = 75182-25DIW Mean = 45.88 % Relative Standard Deviation = 0.9 Number of Observations = 47 Blind Sample ID = 75180-25DIW Mean = 24.99 % Relative Standard Deviation = 1.0 Number of Observations = 24 Blind Sample ID = 75178-25DIW Mean = 21.06 % Relative Standard Deviation = 0.9 Number of Observations = 47 Blind Sample ID = 75176-25DIW Mean = 50.94 % Relative Standard Deviation = 0.5 Number of Observations = 22 Blind Sample ID = 75174-25DIW Mean = 27.35 % Relative Standard Deviation = 1.2 Number of Observations = 46 Blind Sample ID = 75172-25DIW Mean = 33.37 % Relative Standard Deviation = 0.9 Number of Observations = 21 Blind Sample ID = 75172-25176 Mean = 23.75 % Relative Standard Deviation = 0.9 Number of Observations = 22 Blind Sample ID = 75170-25DIW Mean = 62.19 % Relative Standard Deviation = 0.8 Number of Observations = 24 Blind Sample ID = 75166-25DIW Mean = 8.94 % Relative Standard Deviation = 1.8 Number of Observations = 36 Blind Sample ID = 75162-25DIW Mean = 18.94 % Relative Standard Deviation = 3.0 Number of Observations = 52 Blind Sample ID = 50DIW-50138 Mean = 78.53 % Relative Standard Deviation = 0.8 Number of Observations = 52 Blind Sample ID = 50DIW-50136 Mean = 29.77 % Relative Standard Deviation = 1.4 Number of Observations = 30 Blind Sample ID = 50DIW-50130 Mean = 15.78 % Relative Standard Deviation = 3.8 Number of Observations = 47 Blind Sample ID = 50168-50DIW Mean = 30.21 % Relative Standard Deviation = 0.9 Number of Observations = 23 Blind Sample ID = 50168-50170 Mean = 20.79 % Relative Standard Deviation = 1.9 Number of Observations = 24 Blind Sample ID = 50168-50164 Mean = 6.83 % Relative Standard Deviation = 2.2 Number of Observations = 48 Blind Sample ID = 50164-50DIW Mean = 47.26 % Relative Standard Deviation = 1.0 Number of Observations = 24 Blind Sample ID = 50164-50166 Mean = 11.56 % Relative Standard Deviation = 2.0 Number of Observations = 24 Blind Sample ID = 50162-50164 Mean = 42.70 % Relative Standard Deviation = 0.4 Number of Observations = 46 Blind Sample ID = 50162-50160 Mean = 43.10 % Relative Standard Deviation = 4.6 Number of Observations = 34 Blind Sample ID = 50160-50162 Mean = 69.35 % Relative Standard Deviation = 2.2 Number of Observations = 58 Blind Sample ID = 50160-50158 Mean = 33.78 % Relative Standard Deviation = 6.9 Number of Observations = 24 Blind Sample ID = 50158-50DIW Mean = 32.65 % Relative Standard Deviation = 1.1 Number of Observations = 24 Blind Sample ID = 50156-50DIW Mean = 58.97 % Relative Standard Deviation = 2.7 Number of Observations = 24 Blind Sample ID = 50154-50DIW Mean = 3.86 % Relative Standard Deviation = 5.1 Number of Observations = 24 Blind Sample ID = 50152-50DIW Mean = 133.56 % Relative Standard Deviation = 0.9 Number of Observations = 34 Blind Sample ID = 50142-50144 Mean = 99.55 % Relative Standard Deviation = 1.1 Number of Observations = 18 Blind Sample ID = 50140-50144 Mean = 74.56 % Relative Standard Deviation = 0.9 Number of Observations = 46 Blind Sample ID = 50138-50140 Mean = 94.57 % Relative Standard Deviation = 0.7 Number of Observations = 30 Blind Sample ID = 50136-50138 Mean = 88.58 % Relative Standard Deviation = 0.7 Number of Observations = 18 Blind Sample ID = 50134-50140 Mean = 109.42 % Relative Standard Deviation = 0.6 Number of Observations = 68 Blind Sample ID = 50134-50136 Mean = 80.13 % Relative Standard Deviation = 0.4 Number of Observations = 18 Blind Sample ID = 50132-50134 Mean = 104.98 % Relative Standard Deviation = 0.4 Number of Observations = 30 Blind Sample ID = 50130-50136 Mean = 75.10 % Relative Standard Deviation = 0.5 Number of Observations = 24 Blind Sample ID = 50130-50132 Mean = 47.98 % Relative Standard Deviation = 1.0 Number of Observations = 36 Blind Sample ID = 25DIW-75156 Mean = 17.02 % Relative Standard Deviation = 5.0 Number of Observations = 41 Blind Sample ID = 25DIW-75150 Mean = 65.71 % Relative Standard Deviation = 1.3 Number of Observations = 60 Blind Sample ID = 25DIW-75144 Mean = 137.22 % Relative Standard Deviation = 1.1 Number of Observations = 26 Blind Sample ID = 25DIW-75142 Mean = 27.44 % Relative Standard Deviation = 1.4 Number of Observations = 30 Blind Sample ID = 25DIW-75138 Mean = 116.41 % Relative Standard Deviation = 0.6 Number of Observations = 52 Blind Sample ID = 25DIW-75136 Mean = 40.00 % Relative Standard Deviation = 2.2 Number of Observations = 21 Blind Sample ID = 25188-75192 Mean = 77.85 % Relative Standard Deviation = 0.8 Number of Observations = 24 Blind Sample ID = 25186-75188 Mean = 49.79 % Relative Standard Deviation = 1.2 Number of Observations = 23 Blind Sample ID = 25184-75186 Mean = 37.98 % Relative Standard Deviation = 2.0 Number of Observations = 24 Blind Sample ID = 25184-75182 Mean = 54.18 % Relative Standard Deviation = 1.3 Number of Observations = 24 Blind Sample ID = 25182-75180 Mean = 48.27 % Relative Standard Deviation = 0.8 Number of Observations = 23 Blind Sample ID = 25180-75184 Mean = 39.31 % Relative Standard Deviation = 0.5 Number of Observations = 24 Blind Sample ID = 25180-75178 Mean = 35.44 % Relative Standard Deviation = 0.7 Number of Observations = 23 Blind Sample ID = 25180-75176 Mean = 28.66 % Relative Standard Deviation = 0.9 Number of Observations = 23 Blind Sample ID = 25178-75176 Mean = 37.02 % Relative Standard Deviation = 0.7 Number of Observations = 22 Blind Sample ID = 25174-75176 Mean = 58.90 % Relative Standard Deviation = 0.4 Number of Observations = 22 Blind Sample ID = 25172-75174 Mean = 31.50 % Relative Standard Deviation = 1.3 Number of Observations = 22 Blind Sample ID = 25172-75170 Mean = 30.52 % Relative Standard Deviation = 3.2 Number of Observations = 24 Blind Sample ID = 25172-75168 Mean = 67.88 % Relative Standard Deviation = 2.6 Number of Observations = 25 Blind Sample ID = 25168-75166 Mean = 58.67 % Relative Standard Deviation = 0.4 Number of Observations = 23 Blind Sample ID = 25164-75160 Mean = 50.64 % Relative Standard Deviation = 0.4 Number of Observations = 23 Blind Sample ID = 25162-75158 Mean = 19.45 % Relative Standard Deviation = 1.1 Number of Observations = 24 Blind Sample ID = 25160-75DIW Mean = 175.80 % Relative Standard Deviation = 2.8 Number of Observations = 36 Blind Sample ID = 25156-75004 Mean = 167.44 % Relative Standard Deviation = 1.5 Number of Observations = 64 Blind Sample ID = 25150-75004 Mean = 157.56 % Relative Standard Deviation = 0.6 Number of Observations = 13 Blind Sample ID = 25144-75142 Mean = 55.24 % Relative Standard Deviation = 1.2 Number of Observations = 32 Blind Sample ID = 25140-75138 Mean = 93.50 % Relative Standard Deviation = 0.9 Number of Observations = 26 Blind Sample ID = 25138-75140 Mean = 132.26 % Relative Standard Deviation = 0.7 Number of Observations = 28 Blind Sample ID = 25134-75136 Mean = 65.79 % Relative Standard Deviation = 0.8 Number of Observations = 16 Blind Sample ID = 25132-75130 Mean = 135.14 % Relative Standard Deviation = 0.7 Number of Observations = 60 Blind Sample ID = 25004-75154
The SGPlot Procedure


- Alkalinity (as CaCO3), FIL, TITR -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 29801, MCode: TT040
Dates: 10/05/99 through 09/28/11
Open Data Set

Mean = 1.34 % Relative Standard Deviation = 11.6 Number of Observations = 4 Blind Sample ID = P35 Mean = 19.25 % Relative Standard Deviation = 2.3 Number of Observations = 24 Blind Sample ID = 75192-25DIW Mean = 37.57 % Relative Standard Deviation = 1.7 Number of Observations = 20 Blind Sample ID = 75190-25DIW Mean = 42.94 % Relative Standard Deviation = 3.7 Number of Observations = 24 Blind Sample ID = 75190-25192 Mean = 65.64 % Relative Standard Deviation = 0.8 Number of Observations = 41 Blind Sample ID = 75188-25DIW Mean = 77.56 % Relative Standard Deviation = 2.4 Number of Observations = 20 Blind Sample ID = 75188-25190 Mean = 39.36 % Relative Standard Deviation = 1.5 Number of Observations = 24 Blind Sample ID = 75186-25DIW Mean = 32.12 % Relative Standard Deviation = 8.3 Number of Observations = 46 Blind Sample ID = 75184-25DIW Mean = 54.96 % Relative Standard Deviation = 1.1 Number of Observations = 22 Blind Sample ID = 75184-25188 Mean = 27.55 % Relative Standard Deviation = 2.9 Number of Observations = 23 Blind Sample ID = 75182-25DIW Mean = 45.93 % Relative Standard Deviation = 1.3 Number of Observations = 48 Blind Sample ID = 75180-25DIW Mean = 24.95 % Relative Standard Deviation = 0.6 Number of Observations = 24 Blind Sample ID = 75178-25DIW Mean = 21.10 % Relative Standard Deviation = 1.1 Number of Observations = 46 Blind Sample ID = 75176-25DIW Mean = 50.91 % Relative Standard Deviation = 0.5 Number of Observations = 23 Blind Sample ID = 75174-25DIW Mean = 27.33 % Relative Standard Deviation = 1.2 Number of Observations = 46 Blind Sample ID = 75172-25DIW Mean = 33.36 % Relative Standard Deviation = 0.5 Number of Observations = 20 Blind Sample ID = 75172-25176 Mean = 23.76 % Relative Standard Deviation = 2.1 Number of Observations = 22 Blind Sample ID = 75170-25DIW Mean = 62.32 % Relative Standard Deviation = 0.8 Number of Observations = 24 Blind Sample ID = 75166-25DIW Mean = 8.99 % Relative Standard Deviation = 2.6 Number of Observations = 33 Blind Sample ID = 75162-25DIW Mean = 15.74 % Relative Standard Deviation = 3.2 Number of Observations = 47 Blind Sample ID = 50168-50DIW Mean = 30.28 % Relative Standard Deviation = 0.7 Number of Observations = 23 Blind Sample ID = 50168-50170 Mean = 21.00 % Relative Standard Deviation = 4.9 Number of Observations = 24 Blind Sample ID = 50168-50164 Mean = 6.81 % Relative Standard Deviation = 3.0 Number of Observations = 23 Blind Sample ID = 50164-50DIW Mean = 47.23 % Relative Standard Deviation = 0.8 Number of Observations = 24 Blind Sample ID = 50164-50166 Mean = 42.66 % Relative Standard Deviation = 0.6 Number of Observations = 46 Blind Sample ID = 50162-50160 Mean = 43.30 % Relative Standard Deviation = 5.4 Number of Observations = 34 Blind Sample ID = 50160-50162 Mean = 69.16 % Relative Standard Deviation = 0.4 Number of Observations = 32 Blind Sample ID = 50160-50158 Mean = 33.59 % Relative Standard Deviation = 6.8 Number of Observations = 20 Blind Sample ID = 50158-50DIW Mean = 32.50 % Relative Standard Deviation = 1.3 Number of Observations = 19 Blind Sample ID = 50156-50DIW Mean = 58.68 % Relative Standard Deviation = 2.4 Number of Observations = 20 Blind Sample ID = 50154-50DIW Mean = 3.90 % Relative Standard Deviation = 4.5 Number of Observations = 16 Blind Sample ID = 50152-50DIW Mean = 106.48 % Relative Standard Deviation = 0.7 Number of Observations = 15 Blind Sample ID = 50004-50DIW Mean = 39.77 % Relative Standard Deviation = 3.2 Number of Observations = 20 Blind Sample ID = 25188-75192 Mean = 77.79 % Relative Standard Deviation = 0.8 Number of Observations = 21 Blind Sample ID = 25186-75188 Mean = 49.70 % Relative Standard Deviation = 1.2 Number of Observations = 24 Blind Sample ID = 25184-75186 Mean = 37.73 % Relative Standard Deviation = 2.5 Number of Observations = 22 Blind Sample ID = 25184-75182 Mean = 54.07 % Relative Standard Deviation = 2.0 Number of Observations = 23 Blind Sample ID = 25182-75180 Mean = 48.20 % Relative Standard Deviation = 0.9 Number of Observations = 23 Blind Sample ID = 25180-75184 Mean = 39.34 % Relative Standard Deviation = 0.5 Number of Observations = 24 Blind Sample ID = 25180-75178 Mean = 35.47 % Relative Standard Deviation = 0.6 Number of Observations = 23 Blind Sample ID = 25180-75176 Mean = 28.61 % Relative Standard Deviation = 1.0 Number of Observations = 23 Blind Sample ID = 25178-75176 Mean = 36.97 % Relative Standard Deviation = 0.7 Number of Observations = 21 Blind Sample ID = 25174-75176 Mean = 59.03 % Relative Standard Deviation = 0.3 Number of Observations = 21 Blind Sample ID = 25172-75174 Mean = 31.60 % Relative Standard Deviation = 1.0 Number of Observations = 22 Blind Sample ID = 25172-75170 Mean = 30.52 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = 25172-75168 Mean = 67.26 % Relative Standard Deviation = 1.6 Number of Observations = 25 Blind Sample ID = 25168-75166 Mean = 58.91 % Relative Standard Deviation = 2.0 Number of Observations = 24 Blind Sample ID = 25164-75160 Mean = 50.75 % Relative Standard Deviation = 0.5 Number of Observations = 18 Blind Sample ID = 25162-75158 Mean = 19.55 % Relative Standard Deviation = 1.9 Number of Observations = 20 Blind Sample ID = 25160-75DIW Mean = 185.23 % Relative Standard Deviation = 1.5 Number of Observations = 19 Blind Sample ID = 25154-75004 Mean = 158.62 % Relative Standard Deviation = 2.1 Number of Observations = 14 Blind Sample ID = 25144-75142
The SGPlot Procedure


- Bromide, FIL, IC -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 71870, MCode: IC027
Dates: 10/21/10 through 09/28/11
Open Data Set

Mean = 0.14 % Relative Standard Deviation = 9.3 Number of Observations = 24 Blind Sample ID = 75192-25DIW Mean = 0.21 % Relative Standard Deviation = 6.2 Number of Observations = 19 Blind Sample ID = 75190-25DIW Mean = 0.26 % Relative Standard Deviation = 4.7 Number of Observations = 22 Blind Sample ID = 75190-25192 Mean = 0.06 % Relative Standard Deviation = 9.7 Number of Observations = 21 Blind Sample ID = 75188-25DIW Mean = 0.14 % Relative Standard Deviation = 8.8 Number of Observations = 19 Blind Sample ID = 75188-25190 Mean = 0.17 % Relative Standard Deviation = 5.5 Number of Observations = 18 Blind Sample ID = 25188-75192
The SGPlot Procedure


- Calcium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00915, MCode: PLA11
Dates: 10/01/96 through 09/30/11
Open Data Set

Mean = 0.31 % Relative Standard Deviation = 3.9 Number of Observations = 15 Blind Sample ID = P51 Mean = 0.85 % Relative Standard Deviation = 3.5 Number of Observations = 32 Blind Sample ID = P50 Mean = 1.91 % Relative Standard Deviation = 5.5 Number of Observations = 31 Blind Sample ID = P49 Mean = 0.55 % Relative Standard Deviation = 4.6 Number of Observations = 30 Blind Sample ID = P48 Mean = 1.42 % Relative Standard Deviation = 3.0 Number of Observations = 14 Blind Sample ID = P47 Mean = 0.44 % Relative Standard Deviation = 3.7 Number of Observations = 25 Blind Sample ID = P46 Mean = 0.14 % Relative Standard Deviation = 6.2 Number of Observations = 31 Blind Sample ID = P45 Mean = 0.53 % Relative Standard Deviation = 4.4 Number of Observations = 28 Blind Sample ID = P44 Mean = 0.53 % Relative Standard Deviation = 4.0 Number of Observations = 30 Blind Sample ID = P43 Mean = 0.50 % Relative Standard Deviation = 2.7 Number of Observations = 32 Blind Sample ID = P42 Mean = 0.55 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = P41 Mean = 6.26 % Relative Standard Deviation = 4.6 Number of Observations = 16 Blind Sample ID = P38 Mean = 1.01 % Relative Standard Deviation = 5.3 Number of Observations = 16 Blind Sample ID = P37 Mean = 0.58 % Relative Standard Deviation = 3.7 Number of Observations = 38 Blind Sample ID = P36 Mean = 7.54 % Relative Standard Deviation = 2.0 Number of Observations = 27 Blind Sample ID = P31 Mean = 0.14 % Relative Standard Deviation = 14.1 Number of Observations = 20 Blind Sample ID = P30 Mean = 0.46 % Relative Standard Deviation = 1.1 Number of Observations = 3 Blind Sample ID = P26 Mean = 0.36 % Relative Standard Deviation = 5.6 Number of Observations = 3 Blind Sample ID = P24 Mean = 10.18 % Relative Standard Deviation = 1.8 Number of Observations = 28 Blind Sample ID = 75DIW-25155 Mean = 6.37 % Relative Standard Deviation = 2.1 Number of Observations = 22 Blind Sample ID = 75DIW-25146 Mean = 12.65 % Relative Standard Deviation = 3.6 Number of Observations = 10 Blind Sample ID = 75DIW-25139 Mean = 3.31 % Relative Standard Deviation = 2.4 Number of Observations = 22 Blind Sample ID = 75DIW-25138 Mean = 9.51 % Relative Standard Deviation = 2.0 Number of Observations = 14 Blind Sample ID = 75DIW-25137 Mean = 5.27 % Relative Standard Deviation = 2.7 Number of Observations = 22 Blind Sample ID = 75DIW-25130 Mean = 42.36 % Relative Standard Deviation = 4.0 Number of Observations = 14 Blind Sample ID = 75197-25DIW Mean = 21.07 % Relative Standard Deviation = 2.9 Number of Observations = 16 Blind Sample ID = 75195-25197 Mean = 13.89 % Relative Standard Deviation = 3.5 Number of Observations = 32 Blind Sample ID = 75193-25DIW Mean = 27.85 % Relative Standard Deviation = 2.1 Number of Observations = 18 Blind Sample ID = 75193-25197 Mean = 22.96 % Relative Standard Deviation = 3.0 Number of Observations = 30 Blind Sample ID = 75191-25DIW Mean = 23.20 % Relative Standard Deviation = 3.6 Number of Observations = 32 Blind Sample ID = 75189-25DIW Mean = 27.93 % Relative Standard Deviation = 3.0 Number of Observations = 18 Blind Sample ID = 75189-25193 Mean = 30.16 % Relative Standard Deviation = 3.8 Number of Observations = 14 Blind Sample ID = 75189-25191 Mean = 2.94 % Relative Standard Deviation = 2.9 Number of Observations = 29 Blind Sample ID = 75187-25DIW Mean = 9.58 % Relative Standard Deviation = 2.4 Number of Observations = 14 Blind Sample ID = 75185-25DIW Mean = 8.65 % Relative Standard Deviation = 4.0 Number of Observations = 29 Blind Sample ID = 75183-25DIW Mean = 10.35 % Relative Standard Deviation = 1.8 Number of Observations = 11 Blind Sample ID = 75181-25DIW Mean = 14.50 % Relative Standard Deviation = 3.8 Number of Observations = 32 Blind Sample ID = 75179-25DIW Mean = 6.45 % Relative Standard Deviation = 3.8 Number of Observations = 16 Blind Sample ID = 75175-25DIW Mean = 5.05 % Relative Standard Deviation = 3.2 Number of Observations = 31 Blind Sample ID = 75171-25DIW Mean = 29.45 % Relative Standard Deviation = 2.5 Number of Observations = 19 Blind Sample ID = 75169-25DIW Mean = 15.18 % Relative Standard Deviation = 3.1 Number of Observations = 14 Blind Sample ID = 50DIW-50145 Mean = 6.48 % Relative Standard Deviation = 2.7 Number of Observations = 22 Blind Sample ID = 50DIW-50138 Mean = 17.56 % Relative Standard Deviation = 4.0 Number of Observations = 16 Blind Sample ID = 50187-50191 Mean = 17.72 % Relative Standard Deviation = 2.7 Number of Observations = 18 Blind Sample ID = 50187-50189 Mean = 7.74 % Relative Standard Deviation = 3.0 Number of Observations = 16 Blind Sample ID = 50187-50183 Mean = 8.39 % Relative Standard Deviation = 3.9 Number of Observations = 16 Blind Sample ID = 50185-50187 Mean = 12.23 % Relative Standard Deviation = 2.0 Number of Observations = 18 Blind Sample ID = 50183-50185 Mean = 26.14 % Relative Standard Deviation = 3.9 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 4.40 % Relative Standard Deviation = 2.6 Number of Observations = 31 Blind Sample ID = 50175-50DIW Mean = 22.66 % Relative Standard Deviation = 3.2 Number of Observations = 16 Blind Sample ID = 50175-50173 Mean = 17.91 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 50173-50DIW Mean = 3.40 % Relative Standard Deviation = 4.6 Number of Observations = 35 Blind Sample ID = 50171-50DIW Mean = 21.28 % Relative Standard Deviation = 3.9 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 2.57 % Relative Standard Deviation = 1.9 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 5.91 % Relative Standard Deviation = 3.5 Number of Observations = 36 Blind Sample ID = 50167-50171 Mean = 38.67 % Relative Standard Deviation = 2.5 Number of Observations = 32 Blind Sample ID = 50165-50169 Mean = 21.65 % Relative Standard Deviation = 4.9 Number of Observations = 32 Blind Sample ID = 50165-50167 Mean = 3.13 % Relative Standard Deviation = 0.8 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 3.61 % Relative Standard Deviation = 3.3 Number of Observations = 3 Blind Sample ID = 50161-50DIW Mean = 18.99 % Relative Standard Deviation = 3.3 Number of Observations = 19 Blind Sample ID = 50158-50DIW Mean = 3.18 % Relative Standard Deviation = 4.1 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 14.66 % Relative Standard Deviation = 3.3 Number of Observations = 44 Blind Sample ID = 50156-50DIW Mean = 33.61 % Relative Standard Deviation = 2.0 Number of Observations = 44 Blind Sample ID = 50154-50DIW Mean = 1.80 % Relative Standard Deviation = 2.2 Number of Observations = 40 Blind Sample ID = 50152-50DIW Mean = 38.52 % Relative Standard Deviation = 3.5 Number of Observations = 18 Blind Sample ID = 50147-50151 Mean = 35.13 % Relative Standard Deviation = 1.7 Number of Observations = 16 Blind Sample ID = 50145-50147 Mean = 45.24 % Relative Standard Deviation = 2.7 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 42.74 % Relative Standard Deviation = 2.8 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 66.02 % Relative Standard Deviation = 2.9 Number of Observations = 18 Blind Sample ID = 50140-50144 Mean = 40.94 % Relative Standard Deviation = 2.2 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 36.05 % Relative Standard Deviation = 1.9 Number of Observations = 10 Blind Sample ID = 50139-50141 Mean = 35.88 % Relative Standard Deviation = 2.7 Number of Observations = 48 Blind Sample ID = 50138-50140 Mean = 45.81 % Relative Standard Deviation = 2.3 Number of Observations = 18 Blind Sample ID = 50137-50143 Mean = 28.80 % Relative Standard Deviation = 2.3 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 44.64 % Relative Standard Deviation = 3.0 Number of Observations = 16 Blind Sample ID = 50137-50139 Mean = 31.03 % Relative Standard Deviation = 2.6 Number of Observations = 4 Blind Sample ID = 50135-50139 Mean = 24.21 % Relative Standard Deviation = 2.5 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 51.02 % Relative Standard Deviation = 2.9 Number of Observations = 18 Blind Sample ID = 50134-50140 Mean = 40.11 % Relative Standard Deviation = 2.8 Number of Observations = 18 Blind Sample ID = 50132-50134 Mean = 28.84 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = 50130-50132 Mean = 24.95 % Relative Standard Deviation = 2.0 Number of Observations = 16 Blind Sample ID = 50004-50DIW Mean = 28.05 % Relative Standard Deviation = 2.2 Number of Observations = 33 Blind Sample ID = 25DIW-75151 Mean = 49.97 % Relative Standard Deviation = 3.0 Number of Observations = 26 Blind Sample ID = 25DIW-75142 Mean = 46.26 % Relative Standard Deviation = 3.1 Number of Observations = 52 Blind Sample ID = 25DIW-75136 Mean = 43.76 % Relative Standard Deviation = 6.1 Number of Observations = 11 Blind Sample ID = 25195-75197 Mean = 12.12 % Relative Standard Deviation = 2.8 Number of Observations = 16 Blind Sample ID = 25193-75195 Mean = 20.93 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 25191-75193 Mean = 13.11 % Relative Standard Deviation = 3.0 Number of Observations = 23 Blind Sample ID = 25183-75181 Mean = 17.51 % Relative Standard Deviation = 2.2 Number of Observations = 15 Blind Sample ID = 25181-75179 Mean = 13.51 % Relative Standard Deviation = 2.1 Number of Observations = 8 Blind Sample ID = 25179-75183 Mean = 29.12 % Relative Standard Deviation = 3.0 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 14.54 % Relative Standard Deviation = 3.3 Number of Observations = 16 Blind Sample ID = 25177-75175 Mean = 8.08 % Relative Standard Deviation = 2.6 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 13.38 % Relative Standard Deviation = 4.4 Number of Observations = 75 Blind Sample ID = 25169-75167 Mean = 30.17 % Relative Standard Deviation = 4.3 Number of Observations = 20 Blind Sample ID = 25167-75169 Mean = 9.19 % Relative Standard Deviation = 4.8 Number of Observations = 4 Blind Sample ID = 25165-75DIW Mean = 20.55 % Relative Standard Deviation = 2.1 Number of Observations = 32 Blind Sample ID = 25163-75159 Mean = 33.13 % Relative Standard Deviation = 3.4 Number of Observations = 20 Blind Sample ID = 25162-75158 Mean = 20.98 % Relative Standard Deviation = 2.3 Number of Observations = 35 Blind Sample ID = 25161-75159 Mean = 3.32 % Relative Standard Deviation = 3.8 Number of Observations = 20 Blind Sample ID = 25160-75DIW Mean = 11.49 % Relative Standard Deviation = 2.4 Number of Observations = 32 Blind Sample ID = 25159-75161 Mean = 38.03 % Relative Standard Deviation = 2.2 Number of Observations = 28 Blind Sample ID = 25159-75155 Mean = 21.11 % Relative Standard Deviation = 2.3 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 14.72 % Relative Standard Deviation = 2.7 Number of Observations = 28 Blind Sample ID = 25155-75157 Mean = 30.99 % Relative Standard Deviation = 3.6 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 38.29 % Relative Standard Deviation = 2.2 Number of Observations = 28 Blind Sample ID = 25155-75151 Mean = 40.79 % Relative Standard Deviation = 3.6 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 54.26 % Relative Standard Deviation = 2.4 Number of Observations = 20 Blind Sample ID = 25154-75004 Mean = 5.98 % Relative Standard Deviation = 1.8 Number of Observations = 40 Blind Sample ID = 25152-75150 Mean = 40.13 % Relative Standard Deviation = 3.0 Number of Observations = 26 Blind Sample ID = 25151-75147 Mean = 39.47 % Relative Standard Deviation = 1.8 Number of Observations = 23 Blind Sample ID = 25150-75004 Mean = 33.22 % Relative Standard Deviation = 2.2 Number of Observations = 26 Blind Sample ID = 25147-75145 Mean = 60.14 % Relative Standard Deviation = 2.8 Number of Observations = 18 Blind Sample ID = 25146-75144 Mean = 16.38 % Relative Standard Deviation = 3.2 Number of Observations = 16 Blind Sample ID = 25146-75138 Mean = 68.19 % Relative Standard Deviation = 3.7 Number of Observations = 28 Blind Sample ID = 25144-75142 Mean = 43.34 % Relative Standard Deviation = 2.2 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 24.69 % Relative Standard Deviation = 2.2 Number of Observations = 32 Blind Sample ID = 25140-75138 Mean = 41.53 % Relative Standard Deviation = 2.3 Number of Observations = 24 Blind Sample ID = 25139-75137 Mean = 56.67 % Relative Standard Deviation = 3.2 Number of Observations = 28 Blind Sample ID = 25134-75136 Mean = 25.27 % Relative Standard Deviation = 3.2 Number of Observations = 16 Blind Sample ID = 25132-75130 Mean = 62.41 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = 25004-75154
The SGPlot Procedure


- Calcium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00916, MCode: PLA15
Dates: 10/14/99 through 09/30/11
Open Data Set

Mean = 10.30 % Relative Standard Deviation = 3.4 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 39.83 % Relative Standard Deviation = 1.5 Number of Observations = 4 Blind Sample ID = 75197-25DIW Mean = 20.73 % Relative Standard Deviation = 1.3 Number of Observations = 5 Blind Sample ID = 75195-25197 Mean = 13.31 % Relative Standard Deviation = 1.9 Number of Observations = 16 Blind Sample ID = 75193-25DIW Mean = 26.92 % Relative Standard Deviation = 1.0 Number of Observations = 8 Blind Sample ID = 75193-25197 Mean = 21.69 % Relative Standard Deviation = 2.8 Number of Observations = 16 Blind Sample ID = 75191-25DIW Mean = 22.39 % Relative Standard Deviation = 4.8 Number of Observations = 12 Blind Sample ID = 75189-25DIW Mean = 26.33 % Relative Standard Deviation = 2.9 Number of Observations = 8 Blind Sample ID = 75189-25193 Mean = 29.73 % Relative Standard Deviation = 2.9 Number of Observations = 6 Blind Sample ID = 75189-25191 Mean = 2.78 % Relative Standard Deviation = 3.7 Number of Observations = 12 Blind Sample ID = 75187-25DIW Mean = 9.03 % Relative Standard Deviation = 2.0 Number of Observations = 6 Blind Sample ID = 75185-25DIW Mean = 8.39 % Relative Standard Deviation = 1.9 Number of Observations = 13 Blind Sample ID = 75183-25DIW Mean = 9.87 % Relative Standard Deviation = 4.2 Number of Observations = 8 Blind Sample ID = 75181-25DIW Mean = 13.90 % Relative Standard Deviation = 1.7 Number of Observations = 4 Blind Sample ID = 75179-25DIW Mean = 16.70 % Relative Standard Deviation = 1.9 Number of Observations = 6 Blind Sample ID = 50187-50191 Mean = 16.95 % Relative Standard Deviation = 3.2 Number of Observations = 8 Blind Sample ID = 50187-50189 Mean = 7.41 % Relative Standard Deviation = 2.4 Number of Observations = 6 Blind Sample ID = 50187-50183 Mean = 7.99 % Relative Standard Deviation = 2.0 Number of Observations = 8 Blind Sample ID = 50185-50187 Mean = 12.44 % Relative Standard Deviation = 4.2 Number of Observations = 8 Blind Sample ID = 50183-50185 Mean = 2.96 % Relative Standard Deviation = 1.6 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 19.08 % Relative Standard Deviation = 2.6 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 30.36 % Relative Standard Deviation = 1.7 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 42.75 % Relative Standard Deviation = 2.1 Number of Observations = 5 Blind Sample ID = 25195-75197 Mean = 11.99 % Relative Standard Deviation = 1.7 Number of Observations = 6 Blind Sample ID = 25193-75195 Mean = 20.58 % Relative Standard Deviation = 3.6 Number of Observations = 6 Blind Sample ID = 25191-75193 Mean = 12.94 % Relative Standard Deviation = 2.7 Number of Observations = 15 Blind Sample ID = 25183-75181 Mean = 17.67 % Relative Standard Deviation = 3.1 Number of Observations = 8 Blind Sample ID = 25181-75179 Mean = 19.96 % Relative Standard Deviation = 0.8 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 40.40 % Relative Standard Deviation = 0.7 Number of Observations = 3 Blind Sample ID = 25155-75147
The SGPlot Procedure


- Chloride, FIL, IC -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00940, MCode: IC022
Dates: 10/01/96 through 09/21/11
Open Data Set

Mean = 1.41 % Relative Standard Deviation = 7.7 Number of Observations = 27 Blind Sample ID = P31 Mean = 0.21 % Relative Standard Deviation = 11.9 Number of Observations = 22 Blind Sample ID = P30 Mean = 11.54 % Relative Standard Deviation = 4.8 Number of Observations = 22 Blind Sample ID = 75DIW-25146 Mean = 18.91 % Relative Standard Deviation = 2.3 Number of Observations = 30 Blind Sample ID = 75DIW-25144 Mean = 8.61 % Relative Standard Deviation = 2.9 Number of Observations = 21 Blind Sample ID = 75DIW-25138 Mean = 5.52 % Relative Standard Deviation = 3.1 Number of Observations = 22 Blind Sample ID = 75DIW-25130 Mean = 10.14 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = 75192-25DIW Mean = 21.53 % Relative Standard Deviation = 1.6 Number of Observations = 20 Blind Sample ID = 75190-25DIW Mean = 24.66 % Relative Standard Deviation = 1.7 Number of Observations = 23 Blind Sample ID = 75190-25192 Mean = 21.73 % Relative Standard Deviation = 2.0 Number of Observations = 43 Blind Sample ID = 75188-25DIW Mean = 28.81 % Relative Standard Deviation = 1.3 Number of Observations = 19 Blind Sample ID = 75188-25190 Mean = 17.46 % Relative Standard Deviation = 2.3 Number of Observations = 22 Blind Sample ID = 75186-25DIW Mean = 5.81 % Relative Standard Deviation = 2.3 Number of Observations = 43 Blind Sample ID = 75184-25DIW Mean = 13.69 % Relative Standard Deviation = 2.3 Number of Observations = 24 Blind Sample ID = 75184-25188 Mean = 15.72 % Relative Standard Deviation = 1.8 Number of Observations = 24 Blind Sample ID = 75182-25DIW Mean = 21.83 % Relative Standard Deviation = 1.4 Number of Observations = 48 Blind Sample ID = 75180-25DIW Mean = 42.92 % Relative Standard Deviation = 1.4 Number of Observations = 24 Blind Sample ID = 75178-25DIW Mean = 12.42 % Relative Standard Deviation = 3.3 Number of Observations = 47 Blind Sample ID = 75176-25DIW Mean = 23.86 % Relative Standard Deviation = 1.7 Number of Observations = 23 Blind Sample ID = 75174-25DIW Mean = 11.27 % Relative Standard Deviation = 2.0 Number of Observations = 46 Blind Sample ID = 75172-25DIW Mean = 15.91 % Relative Standard Deviation = 1.9 Number of Observations = 21 Blind Sample ID = 75172-25176 Mean = 6.45 % Relative Standard Deviation = 0.9 Number of Observations = 22 Blind Sample ID = 75170-25DIW Mean = 27.69 % Relative Standard Deviation = 1.9 Number of Observations = 24 Blind Sample ID = 75166-25DIW Mean = 19.46 % Relative Standard Deviation = 3.1 Number of Observations = 35 Blind Sample ID = 75162-25DIW Mean = 16.91 % Relative Standard Deviation = 3.0 Number of Observations = 51 Blind Sample ID = 50DIW-50138 Mean = 46.40 % Relative Standard Deviation = 2.4 Number of Observations = 52 Blind Sample ID = 50DIW-50136 Mean = 11.07 % Relative Standard Deviation = 2.2 Number of Observations = 30 Blind Sample ID = 50DIW-50130 Mean = 4.84 % Relative Standard Deviation = 1.3 Number of Observations = 47 Blind Sample ID = 50168-50DIW Mean = 8.78 % Relative Standard Deviation = 1.0 Number of Observations = 23 Blind Sample ID = 50168-50170 Mean = 16.08 % Relative Standard Deviation = 3.1 Number of Observations = 23 Blind Sample ID = 50168-50164 Mean = 11.46 % Relative Standard Deviation = 3.5 Number of Observations = 48 Blind Sample ID = 50164-50DIW Mean = 30.08 % Relative Standard Deviation = 1.9 Number of Observations = 24 Blind Sample ID = 50164-50166 Mean = 25.56 % Relative Standard Deviation = 3.8 Number of Observations = 39 Blind Sample ID = 50162-50164 Mean = 51.34 % Relative Standard Deviation = 2.3 Number of Observations = 46 Blind Sample ID = 50162-50160 Mean = 50.29 % Relative Standard Deviation = 2.2 Number of Observations = 36 Blind Sample ID = 50160-50162 Mean = 82.52 % Relative Standard Deviation = 1.2 Number of Observations = 59 Blind Sample ID = 50160-50158 Mean = 45.32 % Relative Standard Deviation = 2.2 Number of Observations = 44 Blind Sample ID = 50158-50DIW Mean = 33.30 % Relative Standard Deviation = 1.8 Number of Observations = 31 Blind Sample ID = 50156-50DIW Mean = 71.23 % Relative Standard Deviation = 1.5 Number of Observations = 33 Blind Sample ID = 50154-50DIW Mean = 8.53 % Relative Standard Deviation = 4.4 Number of Observations = 40 Blind Sample ID = 50152-50DIW Mean = 105.88 % Relative Standard Deviation = 2.6 Number of Observations = 34 Blind Sample ID = 50142-50144 Mean = 52.54 % Relative Standard Deviation = 1.6 Number of Observations = 18 Blind Sample ID = 50140-50144 Mean = 30.05 % Relative Standard Deviation = 3.3 Number of Observations = 48 Blind Sample ID = 50138-50140 Mean = 64.47 % Relative Standard Deviation = 2.6 Number of Observations = 30 Blind Sample ID = 50136-50138 Mean = 45.83 % Relative Standard Deviation = 3.8 Number of Observations = 18 Blind Sample ID = 50134-50140 Mean = 79.12 % Relative Standard Deviation = 2.4 Number of Observations = 67 Blind Sample ID = 50134-50136 Mean = 61.27 % Relative Standard Deviation = 1.6 Number of Observations = 18 Blind Sample ID = 50132-50134 Mean = 57.98 % Relative Standard Deviation = 2.4 Number of Observations = 30 Blind Sample ID = 50130-50136 Mean = 39.14 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 50130-50132 Mean = 25.32 % Relative Standard Deviation = 4.2 Number of Observations = 16 Blind Sample ID = 50004-50DIW Mean = 33.81 % Relative Standard Deviation = 1.8 Number of Observations = 32 Blind Sample ID = 45160-55DIW Mean = 49.99 % Relative Standard Deviation = 2.0 Number of Observations = 36 Blind Sample ID = 25DIW-75156 Mean = 13.38 % Relative Standard Deviation = 4.0 Number of Observations = 40 Blind Sample ID = 25DIW-75150 Mean = 59.23 % Relative Standard Deviation = 1.9 Number of Observations = 59 Blind Sample ID = 25DIW-75144 Mean = 100.10 % Relative Standard Deviation = 1.9 Number of Observations = 24 Blind Sample ID = 25DIW-75142 Mean = 25.75 % Relative Standard Deviation = 2.5 Number of Observations = 30 Blind Sample ID = 25DIW-75138 Mean = 70.10 % Relative Standard Deviation = 2.3 Number of Observations = 52 Blind Sample ID = 25DIW-75136 Mean = 17.17 % Relative Standard Deviation = 2.6 Number of Observations = 18 Blind Sample ID = 25188-75192 Mean = 27.32 % Relative Standard Deviation = 1.8 Number of Observations = 24 Blind Sample ID = 25186-75188 Mean = 19.08 % Relative Standard Deviation = 3.6 Number of Observations = 23 Blind Sample ID = 25184-75186 Mean = 17.37 % Relative Standard Deviation = 0.9 Number of Observations = 24 Blind Sample ID = 25184-75182 Mean = 26.63 % Relative Standard Deviation = 1.2 Number of Observations = 24 Blind Sample ID = 25182-75180 Mean = 13.50 % Relative Standard Deviation = 1.4 Number of Observations = 22 Blind Sample ID = 25180-75184 Mean = 51.03 % Relative Standard Deviation = 1.5 Number of Observations = 24 Blind Sample ID = 25180-75178 Mean = 19.53 % Relative Standard Deviation = 1.3 Number of Observations = 23 Blind Sample ID = 25180-75176 Mean = 26.40 % Relative Standard Deviation = 1.0 Number of Observations = 23 Blind Sample ID = 25178-75176 Mean = 20.40 % Relative Standard Deviation = 1.6 Number of Observations = 22 Blind Sample ID = 25174-75176 Mean = 27.57 % Relative Standard Deviation = 0.9 Number of Observations = 22 Blind Sample ID = 25172-75174 Mean = 10.04 % Relative Standard Deviation = 1.3 Number of Observations = 22 Blind Sample ID = 25172-75170 Mean = 10.66 % Relative Standard Deviation = 1.3 Number of Observations = 24 Blind Sample ID = 25172-75168 Mean = 29.78 % Relative Standard Deviation = 1.3 Number of Observations = 25 Blind Sample ID = 25168-75166 Mean = 62.66 % Relative Standard Deviation = 2.4 Number of Observations = 24 Blind Sample ID = 25164-75160 Mean = 74.51 % Relative Standard Deviation = 1.0 Number of Observations = 44 Blind Sample ID = 25162-75158 Mean = 17.78 % Relative Standard Deviation = 3.4 Number of Observations = 44 Blind Sample ID = 25160-75DIW Mean = 55.07 % Relative Standard Deviation = 1.9 Number of Observations = 36 Blind Sample ID = 25156-75004 Mean = 73.62 % Relative Standard Deviation = 1.7 Number of Observations = 7 Blind Sample ID = 25154-75004 Mean = 17.71 % Relative Standard Deviation = 3.2 Number of Observations = 40 Blind Sample ID = 25152-75150 Mean = 71.60 % Relative Standard Deviation = 1.5 Number of Observations = 18 Blind Sample ID = 25146-75144 Mean = 112.07 % Relative Standard Deviation = 1.4 Number of Observations = 33 Blind Sample ID = 25146-75142 Mean = 38.70 % Relative Standard Deviation = 2.0 Number of Observations = 16 Blind Sample ID = 25146-75138 Mean = 56.98 % Relative Standard Deviation = 1.9 Number of Observations = 26 Blind Sample ID = 25144-75146 Mean = 119.55 % Relative Standard Deviation = 1.8 Number of Observations = 28 Blind Sample ID = 25144-75142 Mean = 32.39 % Relative Standard Deviation = 2.7 Number of Observations = 32 Blind Sample ID = 25140-75138 Mean = 27.97 % Relative Standard Deviation = 2.6 Number of Observations = 25 Blind Sample ID = 25138-75140 Mean = 85.57 % Relative Standard Deviation = 2.1 Number of Observations = 28 Blind Sample ID = 25134-75136 Mean = 30.62 % Relative Standard Deviation = 2.4 Number of Observations = 16 Blind Sample ID = 25132-75130 Mean = 118.38 % Relative Standard Deviation = 1.3 Number of Observations = 60 Blind Sample ID = 25004-75154 Mean = 24.85 % Relative Standard Deviation = 3.4 Number of Observations = 39 Blind Sample ID = 25004-75152
The SGPlot Procedure


- Chloride, FIL, IC, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00940, MCode: IC024
Dates: 10/23/96 through 09/22/11
Open Data Set

Mean = 1.23 % Relative Standard Deviation = 2.5 Number of Observations = 13 Blind Sample ID = P51 Mean = 1.62 % Relative Standard Deviation = 2.6 Number of Observations = 32 Blind Sample ID = P50 Mean = 1.12 % Relative Standard Deviation = 4.4 Number of Observations = 31 Blind Sample ID = P49 Mean = 2.53 % Relative Standard Deviation = 1.3 Number of Observations = 30 Blind Sample ID = P48 Mean = 3.64 % Relative Standard Deviation = 0.7 Number of Observations = 14 Blind Sample ID = P47 Mean = 4.56 % Relative Standard Deviation = 1.6 Number of Observations = 25 Blind Sample ID = P46 Mean = 0.28 % Relative Standard Deviation = 19.7 Number of Observations = 31 Blind Sample ID = P45 Mean = 2.47 % Relative Standard Deviation = 1.0 Number of Observations = 28 Blind Sample ID = P44 Mean = 4.95 % Relative Standard Deviation = 1.7 Number of Observations = 30 Blind Sample ID = P43 Mean = 6.28 % Relative Standard Deviation = 1.1 Number of Observations = 32 Blind Sample ID = P42 Mean = 6.00 % Relative Standard Deviation = 1.4 Number of Observations = 24 Blind Sample ID = P41 Mean = 9.14 % Relative Standard Deviation = 2.8 Number of Observations = 16 Blind Sample ID = P38 Mean = 3.12 % Relative Standard Deviation = 3.3 Number of Observations = 16 Blind Sample ID = P37 Mean = 3.64 % Relative Standard Deviation = 1.9 Number of Observations = 38 Blind Sample ID = P36 Mean = 5.41 % Relative Standard Deviation = 0.9 Number of Observations = 4 Blind Sample ID = P35 Mean = 4.26 % Relative Standard Deviation = 1.3 Number of Observations = 4 Blind Sample ID = P34 Mean = 2.52 % Relative Standard Deviation = 4.1 Number of Observations = 11 Blind Sample ID = P33 Mean = 1.61 % Relative Standard Deviation = 0.5 Number of Observations = 7 Blind Sample ID = P32 Mean = 1.40 % Relative Standard Deviation = 6.6 Number of Observations = 10 Blind Sample ID = P31 Mean = 0.23 % Relative Standard Deviation = 19.5 Number of Observations = 4 Blind Sample ID = P30 Mean = 0.16 % Relative Standard Deviation = 29.0 Number of Observations = 8 Blind Sample ID = P29 Mean = 3.51 % Relative Standard Deviation = 2.3 Number of Observations = 4 Blind Sample ID = P28 Mean = 1.25 % Relative Standard Deviation = 1.5 Number of Observations = 4 Blind Sample ID = P27 Mean = 1.26 % Relative Standard Deviation = 7.8 Number of Observations = 4 Blind Sample ID = P25 Mean = 1.19 % Relative Standard Deviation = 8.2 Number of Observations = 12 Blind Sample ID = P24 Mean = 0.16 % Relative Standard Deviation = 46.9 Number of Observations = 8 Blind Sample ID = P23 Mean = 3.74 % Relative Standard Deviation = 7.0 Number of Observations = 7 Blind Sample ID = P21
The SGPlot Procedure


- Fluoride, FIL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00950, MCode: ISE04
Dates: 05/01/02 through 05/28/03
Open Data Set

Mean = 0.80 % Relative Standard Deviation = 4.6 Number of Observations = 27 Blind Sample ID = 75162-25DIW Mean = 0.67 % Relative Standard Deviation = 3.6 Number of Observations = 23 Blind Sample ID = 50160-50162 Mean = 0.32 % Relative Standard Deviation = 3.6 Number of Observations = 18 Blind Sample ID = 50160-50158 Mean = 0.20 % Relative Standard Deviation = 6.5 Number of Observations = 27 Blind Sample ID = 50158-50DIW Mean = 0.26 % Relative Standard Deviation = 12.5 Number of Observations = 11 Blind Sample ID = 50156-50DIW Mean = 1.09 % Relative Standard Deviation = 5.3 Number of Observations = 22 Blind Sample ID = 50154-50DIW Mean = 0.38 % Relative Standard Deviation = 9.2 Number of Observations = 9 Blind Sample ID = 25DIW-75156 Mean = 0.54 % Relative Standard Deviation = 3.1 Number of Observations = 22 Blind Sample ID = 25162-75158 Mean = 0.07 % Relative Standard Deviation = 15.2 Number of Observations = 14 Blind Sample ID = 25160-75DIW Mean = 1.31 % Relative Standard Deviation = 6.8 Number of Observations = 18 Blind Sample ID = 25156-75004 Mean = 1.70 % Relative Standard Deviation = 4.8 Number of Observations = 9 Blind Sample ID = 25154-75004 Mean = 1.97 % Relative Standard Deviation = 5.7 Number of Observations = 30 Blind Sample ID = 25004-75154
The SGPlot Procedure


- Fluoride, FIL, IC, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00950, MCode: IC024
Dates: 10/23/96 through 10/23/02
Open Data Set

Mean = 0.24 % Relative Standard Deviation = 3.8 Number of Observations = 4 Blind Sample ID = P35 Mean = 0.17 % Relative Standard Deviation = 11.6 Number of Observations = 4 Blind Sample ID = P34 Mean = 0.12 % Relative Standard Deviation = 16.6 Number of Observations = 11 Blind Sample ID = P33 Mean = 0.22 % Relative Standard Deviation = 3.9 Number of Observations = 7 Blind Sample ID = P32 Mean = 0.39 % Relative Standard Deviation = 12.3 Number of Observations = 9 Blind Sample ID = P31 Mean = 0.20 % Relative Standard Deviation = 2.4 Number of Observations = 4 Blind Sample ID = P30 Mean = 0.06 % Relative Standard Deviation = 17.4 Number of Observations = 8 Blind Sample ID = P29 Mean = 0.07 % Relative Standard Deviation = 5.2 Number of Observations = 4 Blind Sample ID = P28 Mean = 0.10 % Relative Standard Deviation = 17.6 Number of Observations = 4 Blind Sample ID = P27 Mean = 0.04 % Relative Standard Deviation = 38.1 Number of Observations = 3 Blind Sample ID = P26 Mean = 0.16 % Relative Standard Deviation = 4.3 Number of Observations = 4 Blind Sample ID = P25 Mean = 0.11 % Relative Standard Deviation = 16.1 Number of Observations = 12 Blind Sample ID = P24 Mean = 0.11 % Relative Standard Deviation = 13.5 Number of Observations = 8 Blind Sample ID = P23 Mean = 0.04 % Relative Standard Deviation = 67.2 Number of Observations = 8 Blind Sample ID = P21
The SGPlot Procedure


- Fluoride, FIL, ISE -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00950, MCode: ISE05
Dates: 10/01/96 through 09/22/11
Open Data Set

Mean = 0.37 % Relative Standard Deviation = 7.9 Number of Observations = 28 Blind Sample ID = P31 Mean = 0.21 % Relative Standard Deviation = 14.7 Number of Observations = 24 Blind Sample ID = P30 Mean = 0.28 % Relative Standard Deviation = 10.4 Number of Observations = 22 Blind Sample ID = 75DIW-25146 Mean = 0.20 % Relative Standard Deviation = 10.8 Number of Observations = 21 Blind Sample ID = 75DIW-25138 Mean = 0.33 % Relative Standard Deviation = 11.4 Number of Observations = 22 Blind Sample ID = 75DIW-25130 Mean = 0.09 % Relative Standard Deviation = 16.7 Number of Observations = 22 Blind Sample ID = 75192-25DIW Mean = 0.38 % Relative Standard Deviation = 5.0 Number of Observations = 20 Blind Sample ID = 75190-25DIW Mean = 0.42 % Relative Standard Deviation = 3.6 Number of Observations = 24 Blind Sample ID = 75190-25192 Mean = 0.64 % Relative Standard Deviation = 3.9 Number of Observations = 44 Blind Sample ID = 75188-25DIW Mean = 0.75 % Relative Standard Deviation = 2.6 Number of Observations = 20 Blind Sample ID = 75188-25190 Mean = 0.71 % Relative Standard Deviation = 4.0 Number of Observations = 24 Blind Sample ID = 75186-25DIW Mean = 1.31 % Relative Standard Deviation = 2.2 Number of Observations = 47 Blind Sample ID = 75184-25DIW Mean = 1.49 % Relative Standard Deviation = 2.4 Number of Observations = 24 Blind Sample ID = 75184-25188 Mean = 0.12 % Relative Standard Deviation = 17.9 Number of Observations = 24 Blind Sample ID = 75182-25DIW Mean = 0.21 % Relative Standard Deviation = 8.3 Number of Observations = 48 Blind Sample ID = 75180-25DIW Mean = 0.22 % Relative Standard Deviation = 8.7 Number of Observations = 24 Blind Sample ID = 75178-25DIW Mean = 0.16 % Relative Standard Deviation = 9.5 Number of Observations = 47 Blind Sample ID = 75176-25DIW Mean = 0.22 % Relative Standard Deviation = 5.6 Number of Observations = 22 Blind Sample ID = 75174-25DIW Mean = 0.32 % Relative Standard Deviation = 8.2 Number of Observations = 45 Blind Sample ID = 75172-25DIW Mean = 0.37 % Relative Standard Deviation = 3.2 Number of Observations = 21 Blind Sample ID = 75172-25176 Mean = 0.21 % Relative Standard Deviation = 7.5 Number of Observations = 22 Blind Sample ID = 75170-25DIW Mean = 0.55 % Relative Standard Deviation = 2.7 Number of Observations = 24 Blind Sample ID = 75166-25DIW Mean = 0.79 % Relative Standard Deviation = 4.0 Number of Observations = 18 Blind Sample ID = 75162-25DIW Mean = 0.38 % Relative Standard Deviation = 8.5 Number of Observations = 51 Blind Sample ID = 50DIW-50138 Mean = 0.56 % Relative Standard Deviation = 11.5 Number of Observations = 52 Blind Sample ID = 50DIW-50136 Mean = 0.66 % Relative Standard Deviation = 6.6 Number of Observations = 30 Blind Sample ID = 50DIW-50130 Mean = 0.46 % Relative Standard Deviation = 4.0 Number of Observations = 47 Blind Sample ID = 50168-50DIW Mean = 0.59 % Relative Standard Deviation = 2.8 Number of Observations = 23 Blind Sample ID = 50168-50170 Mean = 0.76 % Relative Standard Deviation = 2.1 Number of Observations = 24 Blind Sample ID = 50168-50164 Mean = 0.32 % Relative Standard Deviation = 3.8 Number of Observations = 48 Blind Sample ID = 50164-50DIW Mean = 0.69 % Relative Standard Deviation = 2.4 Number of Observations = 24 Blind Sample ID = 50164-50166 Mean = 0.86 % Relative Standard Deviation = 2.2 Number of Observations = 40 Blind Sample ID = 50162-50164 Mean = 0.67 % Relative Standard Deviation = 2.1 Number of Observations = 48 Blind Sample ID = 50162-50160 Mean = 0.67 % Relative Standard Deviation = 2.2 Number of Observations = 18 Blind Sample ID = 50160-50162 Mean = 0.31 % Relative Standard Deviation = 4.3 Number of Observations = 41 Blind Sample ID = 50160-50158 Mean = 0.19 % Relative Standard Deviation = 6.7 Number of Observations = 27 Blind Sample ID = 50158-50DIW Mean = 0.28 % Relative Standard Deviation = 13.5 Number of Observations = 43 Blind Sample ID = 50156-50DIW Mean = 1.12 % Relative Standard Deviation = 5.6 Number of Observations = 44 Blind Sample ID = 50154-50DIW Mean = 1.01 % Relative Standard Deviation = 4.2 Number of Observations = 40 Blind Sample ID = 50152-50DIW Mean = 0.34 % Relative Standard Deviation = 9.8 Number of Observations = 34 Blind Sample ID = 50142-50144 Mean = 0.38 % Relative Standard Deviation = 7.2 Number of Observations = 18 Blind Sample ID = 50140-50144 Mean = 0.66 % Relative Standard Deviation = 5.1 Number of Observations = 48 Blind Sample ID = 50138-50140 Mean = 0.93 % Relative Standard Deviation = 4.5 Number of Observations = 30 Blind Sample ID = 50136-50138 Mean = 0.57 % Relative Standard Deviation = 7.7 Number of Observations = 18 Blind Sample ID = 50134-50140 Mean = 0.84 % Relative Standard Deviation = 5.3 Number of Observations = 68 Blind Sample ID = 50134-50136 Mean = 0.56 % Relative Standard Deviation = 6.9 Number of Observations = 18 Blind Sample ID = 50132-50134 Mean = 1.17 % Relative Standard Deviation = 4.6 Number of Observations = 30 Blind Sample ID = 50130-50136 Mean = 0.88 % Relative Standard Deviation = 4.5 Number of Observations = 24 Blind Sample ID = 50130-50132 Mean = 0.83 % Relative Standard Deviation = 6.6 Number of Observations = 16 Blind Sample ID = 50004-50DIW Mean = 0.42 % Relative Standard Deviation = 12.3 Number of Observations = 36 Blind Sample ID = 25DIW-75156 Mean = 0.78 % Relative Standard Deviation = 3.3 Number of Observations = 41 Blind Sample ID = 25DIW-75150 Mean = 0.16 % Relative Standard Deviation = 12.5 Number of Observations = 59 Blind Sample ID = 25DIW-75144 Mean = 0.36 % Relative Standard Deviation = 6.5 Number of Observations = 24 Blind Sample ID = 25DIW-75142 Mean = 0.54 % Relative Standard Deviation = 20.6 Number of Observations = 30 Blind Sample ID = 25DIW-75138 Mean = 0.82 % Relative Standard Deviation = 5.0 Number of Observations = 50 Blind Sample ID = 25DIW-75136 Mean = 0.32 % Relative Standard Deviation = 5.2 Number of Observations = 20 Blind Sample ID = 25188-75192 Mean = 0.85 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 25186-75188 Mean = 1.13 % Relative Standard Deviation = 3.2 Number of Observations = 24 Blind Sample ID = 25184-75186 Mean = 0.57 % Relative Standard Deviation = 4.7 Number of Observations = 24 Blind Sample ID = 25184-75182 Mean = 0.25 % Relative Standard Deviation = 8.9 Number of Observations = 24 Blind Sample ID = 25182-75180 Mean = 1.37 % Relative Standard Deviation = 4.0 Number of Observations = 23 Blind Sample ID = 25180-75184 Mean = 0.29 % Relative Standard Deviation = 4.5 Number of Observations = 24 Blind Sample ID = 25180-75178 Mean = 0.23 % Relative Standard Deviation = 5.1 Number of Observations = 23 Blind Sample ID = 25180-75176 Mean = 0.23 % Relative Standard Deviation = 7.1 Number of Observations = 23 Blind Sample ID = 25178-75176 Mean = 0.24 % Relative Standard Deviation = 7.2 Number of Observations = 22 Blind Sample ID = 25174-75176 Mean = 0.32 % Relative Standard Deviation = 5.5 Number of Observations = 22 Blind Sample ID = 25172-75174 Mean = 0.31 % Relative Standard Deviation = 6.5 Number of Observations = 22 Blind Sample ID = 25172-75170 Mean = 0.79 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = 25172-75168 Mean = 0.77 % Relative Standard Deviation = 2.2 Number of Observations = 25 Blind Sample ID = 25168-75166 Mean = 0.35 % Relative Standard Deviation = 3.7 Number of Observations = 24 Blind Sample ID = 25164-75160 Mean = 0.55 % Relative Standard Deviation = 2.5 Number of Observations = 23 Blind Sample ID = 25162-75158 Mean = 1.33 % Relative Standard Deviation = 5.7 Number of Observations = 36 Blind Sample ID = 25156-75004 Mean = 1.71 % Relative Standard Deviation = 3.9 Number of Observations = 19 Blind Sample ID = 25154-75004 Mean = 1.25 % Relative Standard Deviation = 4.3 Number of Observations = 40 Blind Sample ID = 25152-75150 Mean = 1.48 % Relative Standard Deviation = 4.5 Number of Observations = 64 Blind Sample ID = 25150-75004 Mean = 0.44 % Relative Standard Deviation = 7.6 Number of Observations = 18 Blind Sample ID = 25146-75144 Mean = 0.62 % Relative Standard Deviation = 6.4 Number of Observations = 34 Blind Sample ID = 25146-75142 Mean = 0.84 % Relative Standard Deviation = 5.4 Number of Observations = 16 Blind Sample ID = 25146-75138 Mean = 0.87 % Relative Standard Deviation = 5.7 Number of Observations = 26 Blind Sample ID = 25144-75146 Mean = 0.40 % Relative Standard Deviation = 16.2 Number of Observations = 28 Blind Sample ID = 25144-75142 Mean = 0.72 % Relative Standard Deviation = 4.4 Number of Observations = 31 Blind Sample ID = 25140-75138 Mean = 0.59 % Relative Standard Deviation = 9.8 Number of Observations = 26 Blind Sample ID = 25138-75140 Mean = 0.97 % Relative Standard Deviation = 5.4 Number of Observations = 28 Blind Sample ID = 25134-75136 Mean = 1.10 % Relative Standard Deviation = 3.7 Number of Observations = 16 Blind Sample ID = 25132-75130 Mean = 2.02 % Relative Standard Deviation = 6.1 Number of Observations = 60 Blind Sample ID = 25004-75154 Mean = 1.85 % Relative Standard Deviation = 5.2 Number of Observations = 39 Blind Sample ID = 25004-75152
The SGPlot Procedure


- Magnesium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00925, MCode: PLA11
Dates: 10/01/96 through 09/30/11
Open Data Set

Mean = 0.31 % Relative Standard Deviation = 2.6 Number of Observations = 15 Blind Sample ID = P51 Mean = 0.23 % Relative Standard Deviation = 4.3 Number of Observations = 32 Blind Sample ID = P50 Mean = 0.10 % Relative Standard Deviation = 4.9 Number of Observations = 31 Blind Sample ID = P49 Mean = 0.05 % Relative Standard Deviation = 4.6 Number of Observations = 30 Blind Sample ID = P48 Mean = 0.12 % Relative Standard Deviation = 2.7 Number of Observations = 14 Blind Sample ID = P47 Mean = 0.05 % Relative Standard Deviation = 6.5 Number of Observations = 26 Blind Sample ID = P46 Mean = 0.17 % Relative Standard Deviation = 3.1 Number of Observations = 31 Blind Sample ID = P45 Mean = 0.09 % Relative Standard Deviation = 5.6 Number of Observations = 27 Blind Sample ID = P44 Mean = 0.04 % Relative Standard Deviation = 7.5 Number of Observations = 30 Blind Sample ID = P43 Mean = 0.05 % Relative Standard Deviation = 4.3 Number of Observations = 31 Blind Sample ID = P42 Mean = 0.05 % Relative Standard Deviation = 3.3 Number of Observations = 24 Blind Sample ID = P41 Mean = 1.14 % Relative Standard Deviation = 5.4 Number of Observations = 16 Blind Sample ID = P38 Mean = 0.51 % Relative Standard Deviation = 5.1 Number of Observations = 16 Blind Sample ID = P37 Mean = 0.07 % Relative Standard Deviation = 4.3 Number of Observations = 38 Blind Sample ID = P36 Mean = 0.98 % Relative Standard Deviation = 2.8 Number of Observations = 27 Blind Sample ID = P31 Mean = 0.02 % Relative Standard Deviation = 11.7 Number of Observations = 24 Blind Sample ID = P30 Mean = 0.06 % Relative Standard Deviation = 8.3 Number of Observations = 3 Blind Sample ID = P26 Mean = 0.06 % Relative Standard Deviation = 23.4 Number of Observations = 3 Blind Sample ID = P24 Mean = 2.78 % Relative Standard Deviation = 2.6 Number of Observations = 28 Blind Sample ID = 75DIW-25155 Mean = 1.75 % Relative Standard Deviation = 3.1 Number of Observations = 22 Blind Sample ID = 75DIW-25146 Mean = 2.51 % Relative Standard Deviation = 2.9 Number of Observations = 14 Blind Sample ID = 75DIW-25139 Mean = 0.91 % Relative Standard Deviation = 2.5 Number of Observations = 22 Blind Sample ID = 75DIW-25138 Mean = 2.53 % Relative Standard Deviation = 2.8 Number of Observations = 14 Blind Sample ID = 75DIW-25137 Mean = 1.45 % Relative Standard Deviation = 4.3 Number of Observations = 22 Blind Sample ID = 75DIW-25130 Mean = 18.63 % Relative Standard Deviation = 3.3 Number of Observations = 14 Blind Sample ID = 75197-25DIW Mean = 8.51 % Relative Standard Deviation = 1.9 Number of Observations = 16 Blind Sample ID = 75195-25197 Mean = 3.42 % Relative Standard Deviation = 4.8 Number of Observations = 32 Blind Sample ID = 75193-25DIW Mean = 9.45 % Relative Standard Deviation = 2.7 Number of Observations = 18 Blind Sample ID = 75193-25197 Mean = 2.81 % Relative Standard Deviation = 3.7 Number of Observations = 30 Blind Sample ID = 75191-25DIW Mean = 5.89 % Relative Standard Deviation = 3.4 Number of Observations = 32 Blind Sample ID = 75189-25DIW Mean = 6.82 % Relative Standard Deviation = 3.5 Number of Observations = 18 Blind Sample ID = 75189-25193 Mean = 6.69 % Relative Standard Deviation = 3.9 Number of Observations = 14 Blind Sample ID = 75189-25191 Mean = 9.58 % Relative Standard Deviation = 4.3 Number of Observations = 30 Blind Sample ID = 75187-25DIW Mean = 3.53 % Relative Standard Deviation = 2.3 Number of Observations = 14 Blind Sample ID = 75185-25DIW Mean = 5.85 % Relative Standard Deviation = 2.7 Number of Observations = 29 Blind Sample ID = 75183-25DIW Mean = 2.30 % Relative Standard Deviation = 2.8 Number of Observations = 11 Blind Sample ID = 75181-25DIW Mean = 3.39 % Relative Standard Deviation = 2.6 Number of Observations = 32 Blind Sample ID = 75179-25DIW Mean = 1.51 % Relative Standard Deviation = 3.5 Number of Observations = 16 Blind Sample ID = 75175-25DIW Mean = 2.06 % Relative Standard Deviation = 4.8 Number of Observations = 31 Blind Sample ID = 75171-25DIW Mean = 3.19 % Relative Standard Deviation = 4.4 Number of Observations = 19 Blind Sample ID = 75169-25DIW Mean = 4.42 % Relative Standard Deviation = 2.5 Number of Observations = 14 Blind Sample ID = 50DIW-50145 Mean = 1.85 % Relative Standard Deviation = 2.1 Number of Observations = 22 Blind Sample ID = 50DIW-50138 Mean = 8.30 % Relative Standard Deviation = 4.3 Number of Observations = 16 Blind Sample ID = 50187-50191 Mean = 10.60 % Relative Standard Deviation = 2.1 Number of Observations = 18 Blind Sample ID = 50187-50189 Mean = 10.31 % Relative Standard Deviation = 1.9 Number of Observations = 16 Blind Sample ID = 50187-50183 Mean = 8.64 % Relative Standard Deviation = 3.2 Number of Observations = 16 Blind Sample ID = 50185-50187 Mean = 6.18 % Relative Standard Deviation = 1.8 Number of Observations = 18 Blind Sample ID = 50183-50185 Mean = 6.04 % Relative Standard Deviation = 2.1 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 1.02 % Relative Standard Deviation = 2.6 Number of Observations = 31 Blind Sample ID = 50175-50DIW Mean = 5.61 % Relative Standard Deviation = 2.7 Number of Observations = 16 Blind Sample ID = 50175-50173 Mean = 4.62 % Relative Standard Deviation = 3.5 Number of Observations = 16 Blind Sample ID = 50173-50DIW Mean = 1.38 % Relative Standard Deviation = 4.7 Number of Observations = 34 Blind Sample ID = 50171-50DIW Mean = 6.13 % Relative Standard Deviation = 2.4 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 2.42 % Relative Standard Deviation = 1.3 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 3.74 % Relative Standard Deviation = 4.0 Number of Observations = 36 Blind Sample ID = 50167-50171 Mean = 4.24 % Relative Standard Deviation = 2.2 Number of Observations = 32 Blind Sample ID = 50165-50169 Mean = 4.51 % Relative Standard Deviation = 4.6 Number of Observations = 32 Blind Sample ID = 50165-50167 Mean = 0.62 % Relative Standard Deviation = 1.9 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 0.75 % Relative Standard Deviation = 4.3 Number of Observations = 3 Blind Sample ID = 50161-50DIW Mean = 5.91 % Relative Standard Deviation = 2.3 Number of Observations = 19 Blind Sample ID = 50158-50DIW Mean = 0.54 % Relative Standard Deviation = 4.0 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 3.37 % Relative Standard Deviation = 2.1 Number of Observations = 44 Blind Sample ID = 50156-50DIW Mean = 7.52 % Relative Standard Deviation = 1.9 Number of Observations = 44 Blind Sample ID = 50154-50DIW Mean = 0.35 % Relative Standard Deviation = 2.8 Number of Observations = 40 Blind Sample ID = 50152-50DIW Mean = 12.66 % Relative Standard Deviation = 1.6 Number of Observations = 18 Blind Sample ID = 50147-50151 Mean = 8.50 % Relative Standard Deviation = 1.9 Number of Observations = 16 Blind Sample ID = 50145-50147 Mean = 13.87 % Relative Standard Deviation = 2.6 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 9.50 % Relative Standard Deviation = 2.9 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 17.26 % Relative Standard Deviation = 2.0 Number of Observations = 18 Blind Sample ID = 50140-50144 Mean = 9.22 % Relative Standard Deviation = 2.3 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 7.75 % Relative Standard Deviation = 2.7 Number of Observations = 16 Blind Sample ID = 50139-50141 Mean = 10.73 % Relative Standard Deviation = 2.4 Number of Observations = 48 Blind Sample ID = 50138-50140 Mean = 10.31 % Relative Standard Deviation = 1.6 Number of Observations = 18 Blind Sample ID = 50137-50143 Mean = 7.68 % Relative Standard Deviation = 2.2 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 10.05 % Relative Standard Deviation = 2.2 Number of Observations = 16 Blind Sample ID = 50137-50139 Mean = 6.04 % Relative Standard Deviation = 3.8 Number of Observations = 18 Blind Sample ID = 50135-50139 Mean = 5.94 % Relative Standard Deviation = 2.2 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 13.85 % Relative Standard Deviation = 1.2 Number of Observations = 18 Blind Sample ID = 50134-50140 Mean = 8.81 % Relative Standard Deviation = 1.6 Number of Observations = 13 Blind Sample ID = 50132-50134 Mean = 7.01 % Relative Standard Deviation = 3.3 Number of Observations = 24 Blind Sample ID = 50130-50132 Mean = 9.25 % Relative Standard Deviation = 2.5 Number of Observations = 16 Blind Sample ID = 50004-50DIW Mean = 12.99 % Relative Standard Deviation = 2.3 Number of Observations = 33 Blind Sample ID = 25DIW-75151 Mean = 18.44 % Relative Standard Deviation = 2.1 Number of Observations = 26 Blind Sample ID = 25DIW-75142 Mean = 11.17 % Relative Standard Deviation = 2.6 Number of Observations = 52 Blind Sample ID = 25DIW-75136 Mean = 19.20 % Relative Standard Deviation = 3.1 Number of Observations = 11 Blind Sample ID = 25195-75197 Mean = 3.65 % Relative Standard Deviation = 1.7 Number of Observations = 16 Blind Sample ID = 25193-75195 Mean = 4.29 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 25191-75193 Mean = 4.25 % Relative Standard Deviation = 3.0 Number of Observations = 23 Blind Sample ID = 25183-75181 Mean = 4.18 % Relative Standard Deviation = 1.9 Number of Observations = 15 Blind Sample ID = 25181-75179 Mean = 7.02 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = 25179-75183 Mean = 6.74 % Relative Standard Deviation = 2.6 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 3.37 % Relative Standard Deviation = 3.4 Number of Observations = 16 Blind Sample ID = 25177-75175 Mean = 2.23 % Relative Standard Deviation = 2.4 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 4.71 % Relative Standard Deviation = 3.7 Number of Observations = 76 Blind Sample ID = 25169-75167 Mean = 4.38 % Relative Standard Deviation = 5.8 Number of Observations = 20 Blind Sample ID = 25167-75169 Mean = 1.02 % Relative Standard Deviation = 3.7 Number of Observations = 4 Blind Sample ID = 25165-75DIW Mean = 4.52 % Relative Standard Deviation = 2.0 Number of Observations = 32 Blind Sample ID = 25163-75159 Mean = 10.55 % Relative Standard Deviation = 4.5 Number of Observations = 20 Blind Sample ID = 25162-75158 Mean = 4.63 % Relative Standard Deviation = 1.7 Number of Observations = 36 Blind Sample ID = 25161-75159 Mean = 3.64 % Relative Standard Deviation = 2.4 Number of Observations = 19 Blind Sample ID = 25160-75DIW Mean = 2.55 % Relative Standard Deviation = 1.9 Number of Observations = 32 Blind Sample ID = 25159-75161 Mean = 9.72 % Relative Standard Deviation = 2.7 Number of Observations = 28 Blind Sample ID = 25159-75155 Mean = 4.58 % Relative Standard Deviation = 2.1 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 3.39 % Relative Standard Deviation = 2.5 Number of Observations = 27 Blind Sample ID = 25155-75157 Mean = 9.23 % Relative Standard Deviation = 3.7 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 15.87 % Relative Standard Deviation = 1.4 Number of Observations = 28 Blind Sample ID = 25155-75151 Mean = 8.76 % Relative Standard Deviation = 3.1 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 17.44 % Relative Standard Deviation = 1.5 Number of Observations = 20 Blind Sample ID = 25154-75004 Mean = 1.23 % Relative Standard Deviation = 1.9 Number of Observations = 40 Blind Sample ID = 25152-75150 Mean = 10.53 % Relative Standard Deviation = 2.9 Number of Observations = 26 Blind Sample ID = 25151-75147 Mean = 14.36 % Relative Standard Deviation = 2.2 Number of Observations = 23 Blind Sample ID = 25150-75004 Mean = 8.52 % Relative Standard Deviation = 2.0 Number of Observations = 26 Blind Sample ID = 25147-75145 Mean = 14.07 % Relative Standard Deviation = 2.0 Number of Observations = 18 Blind Sample ID = 25146-75144 Mean = 4.53 % Relative Standard Deviation = 2.4 Number of Observations = 16 Blind Sample ID = 25146-75138 Mean = 22.63 % Relative Standard Deviation = 1.6 Number of Observations = 28 Blind Sample ID = 25144-75142 Mean = 8.68 % Relative Standard Deviation = 1.9 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 7.23 % Relative Standard Deviation = 1.7 Number of Observations = 32 Blind Sample ID = 25140-75138 Mean = 10.06 % Relative Standard Deviation = 1.9 Number of Observations = 24 Blind Sample ID = 25139-75137 Mean = 13.72 % Relative Standard Deviation = 2.3 Number of Observations = 22 Blind Sample ID = 25134-75136 Mean = 6.49 % Relative Standard Deviation = 2.5 Number of Observations = 3 Blind Sample ID = 25132-75130 Mean = 15.74 % Relative Standard Deviation = 1.4 Number of Observations = 24 Blind Sample ID = 25004-75154
The SGPlot Procedure


- Magnesium, FIL, ICP-OES, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00925, MCode: PLA09
Dates: 10/23/96 through 01/31/97
Open Data Set

Mean = 0.31 % Relative Standard Deviation = 3.8 Number of Observations = 3 Blind Sample ID = P23 Mean = 0.05 % Relative Standard Deviation = 0.0 Number of Observations = 3 Blind Sample ID = P21
The SGPlot Procedure


- Magnesium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00927, MCode: PLA15
Dates: 10/14/99 through 09/30/11
Open Data Set

Mean = 2.77 % Relative Standard Deviation = 1.3 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 17.65 % Relative Standard Deviation = 1.3 Number of Observations = 4 Blind Sample ID = 75197-25DIW Mean = 8.12 % Relative Standard Deviation = 4.1 Number of Observations = 5 Blind Sample ID = 75195-25197 Mean = 3.33 % Relative Standard Deviation = 4.8 Number of Observations = 16 Blind Sample ID = 75193-25DIW Mean = 9.17 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = 75193-25197 Mean = 2.70 % Relative Standard Deviation = 4.5 Number of Observations = 16 Blind Sample ID = 75191-25DIW Mean = 5.64 % Relative Standard Deviation = 4.7 Number of Observations = 12 Blind Sample ID = 75189-25DIW Mean = 6.67 % Relative Standard Deviation = 3.9 Number of Observations = 8 Blind Sample ID = 75189-25193 Mean = 6.49 % Relative Standard Deviation = 2.2 Number of Observations = 6 Blind Sample ID = 75189-25191 Mean = 8.99 % Relative Standard Deviation = 2.6 Number of Observations = 12 Blind Sample ID = 75187-25DIW Mean = 3.36 % Relative Standard Deviation = 1.8 Number of Observations = 6 Blind Sample ID = 75185-25DIW Mean = 5.59 % Relative Standard Deviation = 4.3 Number of Observations = 13 Blind Sample ID = 75183-25DIW Mean = 2.21 % Relative Standard Deviation = 2.6 Number of Observations = 8 Blind Sample ID = 75181-25DIW Mean = 3.42 % Relative Standard Deviation = 1.8 Number of Observations = 4 Blind Sample ID = 75179-25DIW Mean = 7.86 % Relative Standard Deviation = 4.4 Number of Observations = 6 Blind Sample ID = 50187-50191 Mean = 10.04 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = 50187-50189 Mean = 10.13 % Relative Standard Deviation = 4.6 Number of Observations = 6 Blind Sample ID = 50187-50183 Mean = 8.32 % Relative Standard Deviation = 1.5 Number of Observations = 8 Blind Sample ID = 50185-50187 Mean = 5.95 % Relative Standard Deviation = 1.9 Number of Observations = 8 Blind Sample ID = 50183-50185 Mean = 0.52 % Relative Standard Deviation = 4.2 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 5.15 % Relative Standard Deviation = 2.2 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 6.10 % Relative Standard Deviation = 4.3 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 18.68 % Relative Standard Deviation = 3.4 Number of Observations = 5 Blind Sample ID = 25195-75197 Mean = 3.61 % Relative Standard Deviation = 2.5 Number of Observations = 6 Blind Sample ID = 25193-75195 Mean = 4.14 % Relative Standard Deviation = 2.0 Number of Observations = 6 Blind Sample ID = 25191-75193 Mean = 4.06 % Relative Standard Deviation = 3.2 Number of Observations = 15 Blind Sample ID = 25183-75181 Mean = 3.93 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 25181-75179 Mean = 4.34 % Relative Standard Deviation = 1.0 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 8.84 % Relative Standard Deviation = 2.0 Number of Observations = 3 Blind Sample ID = 25155-75147
The SGPlot Procedure


- Potassium, FIL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00935, MCode:
Dates: 05/23/03 through 06/28/03
Open Data Set

Mean = 2.54 % Relative Standard Deviation = 1.6 Number of Observations = 3 Blind Sample ID = 75162-25DIW Mean = 2.79 % Relative Standard Deviation = 3.5 Number of Observations = 9 Blind Sample ID = 50160-50162 Mean = 2.02 % Relative Standard Deviation = 6.5 Number of Observations = 5 Blind Sample ID = 50160-50158 Mean = 0.90 % Relative Standard Deviation = 5.0 Number of Observations = 11 Blind Sample ID = 50158-50DIW Mean = 2.15 % Relative Standard Deviation = 5.2 Number of Observations = 5 Blind Sample ID = 25162-75158 Mean = 0.55 % Relative Standard Deviation = 4.1 Number of Observations = 5 Blind Sample ID = 25160-75DIW
The SGPlot Procedure


- Potassium, FIL, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00935, MCode: AA030
Dates: 10/01/96 through 05/14/03
Open Data Set

Mean = 0.86 % Relative Standard Deviation = 6.6 Number of Observations = 27 Blind Sample ID = P31 Mean = 0.16 % Relative Standard Deviation = 26.8 Number of Observations = 22 Blind Sample ID = P30 Mean = 0.69 % Relative Standard Deviation = 4.5 Number of Observations = 22 Blind Sample ID = 75DIW-25146 Mean = 0.89 % Relative Standard Deviation = 7.7 Number of Observations = 29 Blind Sample ID = 75DIW-25144 Mean = 0.43 % Relative Standard Deviation = 11.1 Number of Observations = 22 Blind Sample ID = 75DIW-25138 Mean = 0.75 % Relative Standard Deviation = 9.9 Number of Observations = 22 Blind Sample ID = 75DIW-25130 Mean = 2.39 % Relative Standard Deviation = 3.7 Number of Observations = 23 Blind Sample ID = 75162-25DIW Mean = 0.89 % Relative Standard Deviation = 6.1 Number of Observations = 51 Blind Sample ID = 50DIW-50138 Mean = 3.24 % Relative Standard Deviation = 4.6 Number of Observations = 50 Blind Sample ID = 50DIW-50136 Mean = 1.49 % Relative Standard Deviation = 4.9 Number of Observations = 28 Blind Sample ID = 50DIW-50130 Mean = 2.61 % Relative Standard Deviation = 3.9 Number of Observations = 18 Blind Sample ID = 50160-50162 Mean = 1.85 % Relative Standard Deviation = 3.4 Number of Observations = 18 Blind Sample ID = 50160-50158 Mean = 0.84 % Relative Standard Deviation = 6.7 Number of Observations = 22 Blind Sample ID = 50158-50DIW Mean = 1.03 % Relative Standard Deviation = 6.9 Number of Observations = 44 Blind Sample ID = 50156-50DIW Mean = 4.35 % Relative Standard Deviation = 3.1 Number of Observations = 44 Blind Sample ID = 50154-50DIW Mean = 0.44 % Relative Standard Deviation = 9.7 Number of Observations = 39 Blind Sample ID = 50152-50DIW Mean = 4.57 % Relative Standard Deviation = 4.1 Number of Observations = 34 Blind Sample ID = 50142-50144 Mean = 3.06 % Relative Standard Deviation = 5.4 Number of Observations = 17 Blind Sample ID = 50140-50144 Mean = 2.19 % Relative Standard Deviation = 5.3 Number of Observations = 48 Blind Sample ID = 50138-50140 Mean = 4.16 % Relative Standard Deviation = 3.7 Number of Observations = 29 Blind Sample ID = 50136-50138 Mean = 2.49 % Relative Standard Deviation = 6.6 Number of Observations = 18 Blind Sample ID = 50134-50140 Mean = 4.46 % Relative Standard Deviation = 3.8 Number of Observations = 68 Blind Sample ID = 50134-50136 Mean = 2.13 % Relative Standard Deviation = 7.3 Number of Observations = 18 Blind Sample ID = 50132-50134 Mean = 4.77 % Relative Standard Deviation = 4.2 Number of Observations = 30 Blind Sample ID = 50130-50136 Mean = 2.47 % Relative Standard Deviation = 4.3 Number of Observations = 24 Blind Sample ID = 50130-50132 Mean = 0.86 % Relative Standard Deviation = 7.3 Number of Observations = 16 Blind Sample ID = 50004-50DIW Mean = 1.57 % Relative Standard Deviation = 5.2 Number of Observations = 36 Blind Sample ID = 25DIW-75156 Mean = 0.84 % Relative Standard Deviation = 4.9 Number of Observations = 40 Blind Sample ID = 25DIW-75150 Mean = 2.63 % Relative Standard Deviation = 5.7 Number of Observations = 58 Blind Sample ID = 25DIW-75144 Mean = 4.26 % Relative Standard Deviation = 3.2 Number of Observations = 25 Blind Sample ID = 25DIW-75142 Mean = 1.36 % Relative Standard Deviation = 5.9 Number of Observations = 30 Blind Sample ID = 25DIW-75138 Mean = 4.89 % Relative Standard Deviation = 3.7 Number of Observations = 51 Blind Sample ID = 25DIW-75136 Mean = 1.99 % Relative Standard Deviation = 5.4 Number of Observations = 22 Blind Sample ID = 25162-75158 Mean = 0.50 % Relative Standard Deviation = 6.8 Number of Observations = 26 Blind Sample ID = 25160-75DIW Mean = 1.86 % Relative Standard Deviation = 5.3 Number of Observations = 36 Blind Sample ID = 25156-75004 Mean = 3.60 % Relative Standard Deviation = 3.7 Number of Observations = 20 Blind Sample ID = 25154-75004 Mean = 1.09 % Relative Standard Deviation = 8.8 Number of Observations = 40 Blind Sample ID = 25152-75150 Mean = 1.62 % Relative Standard Deviation = 4.5 Number of Observations = 64 Blind Sample ID = 25150-75004 Mean = 3.34 % Relative Standard Deviation = 6.4 Number of Observations = 18 Blind Sample ID = 25146-75144 Mean = 4.90 % Relative Standard Deviation = 4.8 Number of Observations = 34 Blind Sample ID = 25146-75142 Mean = 2.08 % Relative Standard Deviation = 5.1 Number of Observations = 15 Blind Sample ID = 25146-75138 Mean = 3.09 % Relative Standard Deviation = 3.7 Number of Observations = 25 Blind Sample ID = 25144-75146 Mean = 5.15 % Relative Standard Deviation = 4.0 Number of Observations = 28 Blind Sample ID = 25144-75142 Mean = 1.99 % Relative Standard Deviation = 5.6 Number of Observations = 32 Blind Sample ID = 25140-75138 Mean = 2.36 % Relative Standard Deviation = 5.8 Number of Observations = 26 Blind Sample ID = 25138-75140 Mean = 5.58 % Relative Standard Deviation = 4.5 Number of Observations = 28 Blind Sample ID = 25134-75136 Mean = 2.75 % Relative Standard Deviation = 4.5 Number of Observations = 16 Blind Sample ID = 25132-75130 Mean = 7.01 % Relative Standard Deviation = 2.9 Number of Observations = 60 Blind Sample ID = 25004-75154 Mean = 1.08 % Relative Standard Deviation = 7.2 Number of Observations = 39 Blind Sample ID = 25004-75152
The SGPlot Procedure


- Potassium, FIL, AA, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00935, MCode: AA031
Dates: 11/05/96 through 05/13/03
Open Data Set

Mean = 0.81 % Relative Standard Deviation = 4.4 Number of Observations = 4 Blind Sample ID = P38 Mean = 0.48 % Relative Standard Deviation = 4.9 Number of Observations = 6 Blind Sample ID = P37 Mean = 0.16 % Relative Standard Deviation = 10.7 Number of Observations = 4 Blind Sample ID = P36 Mean = 0.11 % Relative Standard Deviation = 7.6 Number of Observations = 7 Blind Sample ID = P33 Mean = 0.42 % Relative Standard Deviation = 5.4 Number of Observations = 7 Blind Sample ID = P32 Mean = 0.92 % Relative Standard Deviation = 4.6 Number of Observations = 9 Blind Sample ID = P31 Mean = 0.38 % Relative Standard Deviation = 4.4 Number of Observations = 3 Blind Sample ID = P29 Mean = 0.15 % Relative Standard Deviation = 1.7 Number of Observations = 4 Blind Sample ID = P26 Mean = 0.56 % Relative Standard Deviation = 1.0 Number of Observations = 4 Blind Sample ID = P25 Mean = 0.12 % Relative Standard Deviation = 6.5 Number of Observations = 11 Blind Sample ID = P24 Mean = 0.50 % Relative Standard Deviation = 3.6 Number of Observations = 8 Blind Sample ID = P23 Mean = 0.09 % Relative Standard Deviation = 4.6 Number of Observations = 7 Blind Sample ID = P21 Mean = 1.16 % Relative Standard Deviation = 5.7 Number of Observations = 3 Blind Sample ID = 50DIW-50145 Mean = 2.59 % Relative Standard Deviation = 6.3 Number of Observations = 7 Blind Sample ID = 25147-75145
The SGPlot Procedure


- Potassium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00935, MCode: PLO03
Dates: 06/05/03 through 09/30/11
Open Data Set

Mean = 4.08 % Relative Standard Deviation = 2.9 Number of Observations = 22 Blind Sample ID = 75197-25DIW Mean = 2.05 % Relative Standard Deviation = 2.4 Number of Observations = 23 Blind Sample ID = 75195-25197 Mean = 2.01 % Relative Standard Deviation = 2.7 Number of Observations = 48 Blind Sample ID = 75193-25DIW Mean = 3.34 % Relative Standard Deviation = 2.7 Number of Observations = 26 Blind Sample ID = 75193-25197 Mean = 3.58 % Relative Standard Deviation = 2.8 Number of Observations = 46 Blind Sample ID = 75191-25DIW Mean = 2.91 % Relative Standard Deviation = 3.8 Number of Observations = 48 Blind Sample ID = 75189-25DIW Mean = 3.54 % Relative Standard Deviation = 3.7 Number of Observations = 26 Blind Sample ID = 75189-25193 Mean = 4.06 % Relative Standard Deviation = 1.9 Number of Observations = 22 Blind Sample ID = 75189-25191 Mean = 6.86 % Relative Standard Deviation = 3.9 Number of Observations = 46 Blind Sample ID = 75187-25DIW Mean = 2.08 % Relative Standard Deviation = 2.5 Number of Observations = 21 Blind Sample ID = 75185-25DIW Mean = 1.97 % Relative Standard Deviation = 3.3 Number of Observations = 44 Blind Sample ID = 75183-25DIW Mean = 1.16 % Relative Standard Deviation = 3.1 Number of Observations = 18 Blind Sample ID = 75181-25DIW Mean = 1.06 % Relative Standard Deviation = 3.9 Number of Observations = 47 Blind Sample ID = 75179-25DIW Mean = 2.87 % Relative Standard Deviation = 3.2 Number of Observations = 24 Blind Sample ID = 75175-25DIW Mean = 2.15 % Relative Standard Deviation = 5.5 Number of Observations = 31 Blind Sample ID = 75171-25DIW Mean = 2.03 % Relative Standard Deviation = 5.0 Number of Observations = 19 Blind Sample ID = 75169-25DIW Mean = 2.43 % Relative Standard Deviation = 3.0 Number of Observations = 9 Blind Sample ID = 75162-25DIW Mean = 7.04 % Relative Standard Deviation = 4.4 Number of Observations = 24 Blind Sample ID = 50187-50191 Mean = 6.41 % Relative Standard Deviation = 4.1 Number of Observations = 18 Blind Sample ID = 50187-50189 Mean = 5.87 % Relative Standard Deviation = 2.3 Number of Observations = 24 Blind Sample ID = 50187-50183 Mean = 5.87 % Relative Standard Deviation = 4.0 Number of Observations = 24 Blind Sample ID = 50185-50187 Mean = 2.69 % Relative Standard Deviation = 2.7 Number of Observations = 26 Blind Sample ID = 50183-50185 Mean = 2.44 % Relative Standard Deviation = 2.7 Number of Observations = 24 Blind Sample ID = 50177-50179 Mean = 1.96 % Relative Standard Deviation = 3.0 Number of Observations = 47 Blind Sample ID = 50175-50DIW Mean = 3.91 % Relative Standard Deviation = 2.9 Number of Observations = 23 Blind Sample ID = 50175-50173 Mean = 1.99 % Relative Standard Deviation = 3.3 Number of Observations = 23 Blind Sample ID = 50173-50DIW Mean = 1.42 % Relative Standard Deviation = 5.2 Number of Observations = 42 Blind Sample ID = 50171-50DIW Mean = 3.45 % Relative Standard Deviation = 3.3 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 3.87 % Relative Standard Deviation = 3.8 Number of Observations = 36 Blind Sample ID = 50167-50171 Mean = 2.77 % Relative Standard Deviation = 6.1 Number of Observations = 11 Blind Sample ID = 50160-50162 Mean = 2.02 % Relative Standard Deviation = 4.1 Number of Observations = 17 Blind Sample ID = 50160-50158 Mean = 0.91 % Relative Standard Deviation = 10.8 Number of Observations = 14 Blind Sample ID = 50158-50DIW Mean = 4.32 % Relative Standard Deviation = 3.2 Number of Observations = 19 Blind Sample ID = 25195-75197 Mean = 1.41 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 25193-75195 Mean = 3.22 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = 25191-75193 Mean = 1.82 % Relative Standard Deviation = 3.4 Number of Observations = 31 Blind Sample ID = 25183-75181 Mean = 1.45 % Relative Standard Deviation = 2.5 Number of Observations = 23 Blind Sample ID = 25181-75179 Mean = 2.32 % Relative Standard Deviation = 2.7 Number of Observations = 15 Blind Sample ID = 25179-75183 Mean = 2.89 % Relative Standard Deviation = 3.7 Number of Observations = 24 Blind Sample ID = 25179-75177 Mean = 3.77 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = 25177-75175 Mean = 3.70 % Relative Standard Deviation = 2.5 Number of Observations = 28 Blind Sample ID = 25171-75175 Mean = 4.38 % Relative Standard Deviation = 4.1 Number of Observations = 40 Blind Sample ID = 25169-75167 Mean = 3.29 % Relative Standard Deviation = 5.1 Number of Observations = 20 Blind Sample ID = 25167-75169 Mean = 2.13 % Relative Standard Deviation = 3.5 Number of Observations = 21 Blind Sample ID = 25162-75158 Mean = 0.57 % Relative Standard Deviation = 6.7 Number of Observations = 12 Blind Sample ID = 25160-75DIW
The SGPlot Procedure


- Potassium, FIL, ICP-OES, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00935, MCode: PLO02
Dates: 06/18/03 through 08/24/11
Open Data Set

Mean = 0.23 % Relative Standard Deviation = 2.6 Number of Observations = 12 Blind Sample ID = P51 Mean = 0.29 % Relative Standard Deviation = 3.1 Number of Observations = 32 Blind Sample ID = P50 Mean = 0.12 % Relative Standard Deviation = 2.9 Number of Observations = 30 Blind Sample ID = P49 Mean = 0.35 % Relative Standard Deviation = 2.7 Number of Observations = 29 Blind Sample ID = P48 Mean = 0.18 % Relative Standard Deviation = 3.6 Number of Observations = 14 Blind Sample ID = P47 Mean = 0.46 % Relative Standard Deviation = 2.6 Number of Observations = 25 Blind Sample ID = P46 Mean = 0.18 % Relative Standard Deviation = 2.6 Number of Observations = 31 Blind Sample ID = P45 Mean = 0.99 % Relative Standard Deviation = 2.4 Number of Observations = 28 Blind Sample ID = P44 Mean = 0.18 % Relative Standard Deviation = 7.0 Number of Observations = 30 Blind Sample ID = P43 Mean = 0.33 % Relative Standard Deviation = 5.8 Number of Observations = 31 Blind Sample ID = P42 Mean = 0.07 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = P41 Mean = 0.88 % Relative Standard Deviation = 4.0 Number of Observations = 12 Blind Sample ID = P38 Mean = 0.51 % Relative Standard Deviation = 2.9 Number of Observations = 10 Blind Sample ID = P37 Mean = 0.17 % Relative Standard Deviation = 4.1 Number of Observations = 33 Blind Sample ID = P36
The SGPlot Procedure


- Potassium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00937, MCode: PLO01
Dates: 11/12/09 through 09/30/11
Open Data Set

Mean = 3.83 % Relative Standard Deviation = 1.6 Number of Observations = 4 Blind Sample ID = 75197-25DIW Mean = 1.96 % Relative Standard Deviation = 2.8 Number of Observations = 5 Blind Sample ID = 75195-25197 Mean = 1.94 % Relative Standard Deviation = 2.9 Number of Observations = 16 Blind Sample ID = 75193-25DIW Mean = 3.17 % Relative Standard Deviation = 1.5 Number of Observations = 8 Blind Sample ID = 75193-25197 Mean = 3.39 % Relative Standard Deviation = 1.0 Number of Observations = 8 Blind Sample ID = 75191-25DIW Mean = 2.67 % Relative Standard Deviation = 3.7 Number of Observations = 6 Blind Sample ID = 75189-25DIW Mean = 3.35 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 75189-25193 Mean = 3.84 % Relative Standard Deviation = 2.7 Number of Observations = 6 Blind Sample ID = 75189-25191 Mean = 4.04 % Relative Standard Deviation = 3.5 Number of Observations = 5 Blind Sample ID = 25195-75197 Mean = 1.35 % Relative Standard Deviation = 1.8 Number of Observations = 6 Blind Sample ID = 25193-75195 Mean = 3.04 % Relative Standard Deviation = 2.2 Number of Observations = 6 Blind Sample ID = 25191-75193
The SGPlot Procedure


- Silica, FIL, CFA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00955, MCode: CL064
Dates: 10/01/96 through 02/17/10
Open Data Set

Mean = 2.20 % Relative Standard Deviation = 5.1 Number of Observations = 21 Blind Sample ID = 75DIW-25138 Mean = 2.42 % Relative Standard Deviation = 3.3 Number of Observations = 21 Blind Sample ID = 75DIW-25130 Mean = 4.25 % Relative Standard Deviation = 1.8 Number of Observations = 8 Blind Sample ID = 75188-25DIW Mean = 8.49 % Relative Standard Deviation = 1.7 Number of Observations = 8 Blind Sample ID = 75186-25DIW Mean = 5.77 % Relative Standard Deviation = 2.7 Number of Observations = 31 Blind Sample ID = 75184-25DIW Mean = 7.01 % Relative Standard Deviation = 1.0 Number of Observations = 5 Blind Sample ID = 75184-25188 Mean = 5.68 % Relative Standard Deviation = 1.7 Number of Observations = 20 Blind Sample ID = 75182-25DIW Mean = 5.17 % Relative Standard Deviation = 1.1 Number of Observations = 46 Blind Sample ID = 75180-25DIW Mean = 10.51 % Relative Standard Deviation = 0.9 Number of Observations = 24 Blind Sample ID = 75178-25DIW Mean = 3.91 % Relative Standard Deviation = 2.7 Number of Observations = 47 Blind Sample ID = 75176-25DIW Mean = 8.07 % Relative Standard Deviation = 1.6 Number of Observations = 23 Blind Sample ID = 75174-25DIW Mean = 9.13 % Relative Standard Deviation = 2.3 Number of Observations = 45 Blind Sample ID = 75172-25DIW Mean = 10.50 % Relative Standard Deviation = 1.5 Number of Observations = 21 Blind Sample ID = 75172-25176 Mean = 8.75 % Relative Standard Deviation = 2.7 Number of Observations = 21 Blind Sample ID = 75170-25DIW Mean = 8.72 % Relative Standard Deviation = 2.3 Number of Observations = 24 Blind Sample ID = 75166-25DIW Mean = 4.59 % Relative Standard Deviation = 3.8 Number of Observations = 21 Blind Sample ID = 50DIW-50138 Mean = 6.47 % Relative Standard Deviation = 3.4 Number of Observations = 25 Blind Sample ID = 50DIW-50136 Mean = 4.75 % Relative Standard Deviation = 3.7 Number of Observations = 30 Blind Sample ID = 50DIW-50130 Mean = 2.66 % Relative Standard Deviation = 2.5 Number of Observations = 47 Blind Sample ID = 50168-50DIW Mean = 8.51 % Relative Standard Deviation = 2.7 Number of Observations = 22 Blind Sample ID = 50168-50170 Mean = 7.30 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 50168-50164 Mean = 4.31 % Relative Standard Deviation = 2.8 Number of Observations = 42 Blind Sample ID = 50164-50DIW Mean = 10.87 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = 50164-50166 Mean = 11.90 % Relative Standard Deviation = 5.6 Number of Observations = 24 Blind Sample ID = 50162-50164 Mean = 8.65 % Relative Standard Deviation = 2.5 Number of Observations = 48 Blind Sample ID = 50162-50160 Mean = 9.01 % Relative Standard Deviation = 2.4 Number of Observations = 24 Blind Sample ID = 50160-50158 Mean = 7.58 % Relative Standard Deviation = 2.0 Number of Observations = 44 Blind Sample ID = 50158-50DIW Mean = 2.39 % Relative Standard Deviation = 3.5 Number of Observations = 43 Blind Sample ID = 50156-50DIW Mean = 5.33 % Relative Standard Deviation = 2.8 Number of Observations = 44 Blind Sample ID = 50154-50DIW Mean = 2.22 % Relative Standard Deviation = 7.6 Number of Observations = 39 Blind Sample ID = 50152-50DIW Mean = 7.42 % Relative Standard Deviation = 4.6 Number of Observations = 18 Blind Sample ID = 50140-50144 Mean = 8.15 % Relative Standard Deviation = 4.5 Number of Observations = 46 Blind Sample ID = 50138-50140 Mean = 6.08 % Relative Standard Deviation = 3.7 Number of Observations = 18 Blind Sample ID = 50134-50140 Mean = 9.13 % Relative Standard Deviation = 4.4 Number of Observations = 34 Blind Sample ID = 50134-50136 Mean = 3.91 % Relative Standard Deviation = 2.6 Number of Observations = 18 Blind Sample ID = 50132-50134 Mean = 11.23 % Relative Standard Deviation = 3.1 Number of Observations = 29 Blind Sample ID = 50130-50136 Mean = 5.99 % Relative Standard Deviation = 4.0 Number of Observations = 24 Blind Sample ID = 50130-50132 Mean = 4.74 % Relative Standard Deviation = 2.6 Number of Observations = 16 Blind Sample ID = 50004-50DIW Mean = 5.88 % Relative Standard Deviation = 4.0 Number of Observations = 25 Blind Sample ID = 25DIW-75142 Mean = 9.62 % Relative Standard Deviation = 4.3 Number of Observations = 49 Blind Sample ID = 25DIW-75136 Mean = 6.98 % Relative Standard Deviation = 2.0 Number of Observations = 6 Blind Sample ID = 25186-75188 Mean = 10.61 % Relative Standard Deviation = 4.6 Number of Observations = 8 Blind Sample ID = 25184-75186 Mean = 7.59 % Relative Standard Deviation = 1.8 Number of Observations = 22 Blind Sample ID = 25184-75182 Mean = 7.03 % Relative Standard Deviation = 2.5 Number of Observations = 22 Blind Sample ID = 25182-75180 Mean = 7.48 % Relative Standard Deviation = 3.0 Number of Observations = 22 Blind Sample ID = 25180-75184 Mean = 12.32 % Relative Standard Deviation = 1.2 Number of Observations = 24 Blind Sample ID = 25180-75178 Mean = 5.69 % Relative Standard Deviation = 1.2 Number of Observations = 23 Blind Sample ID = 25180-75176 Mean = 7.50 % Relative Standard Deviation = 1.2 Number of Observations = 23 Blind Sample ID = 25178-75176 Mean = 6.62 % Relative Standard Deviation = 1.6 Number of Observations = 22 Blind Sample ID = 25174-75176 Mean = 11.04 % Relative Standard Deviation = 1.7 Number of Observations = 22 Blind Sample ID = 25172-75174 Mean = 11.66 % Relative Standard Deviation = 1.9 Number of Observations = 22 Blind Sample ID = 25172-75170 Mean = 7.17 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = 25172-75168 Mean = 10.13 % Relative Standard Deviation = 2.6 Number of Observations = 25 Blind Sample ID = 25168-75166 Mean = 14.66 % Relative Standard Deviation = 1.9 Number of Observations = 44 Blind Sample ID = 25162-75158 Mean = 9.50 % Relative Standard Deviation = 2.4 Number of Observations = 19 Blind Sample ID = 25154-75004 Mean = 10.63 % Relative Standard Deviation = 2.9 Number of Observations = 40 Blind Sample ID = 25152-75150 Mean = 10.02 % Relative Standard Deviation = 2.4 Number of Observations = 23 Blind Sample ID = 25150-75004 Mean = 8.19 % Relative Standard Deviation = 2.7 Number of Observations = 18 Blind Sample ID = 25146-75144 Mean = 9.45 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = 25146-75138 Mean = 7.78 % Relative Standard Deviation = 4.6 Number of Observations = 27 Blind Sample ID = 25144-75142 Mean = 8.76 % Relative Standard Deviation = 4.3 Number of Observations = 32 Blind Sample ID = 25140-75138 Mean = 10.90 % Relative Standard Deviation = 4.1 Number of Observations = 28 Blind Sample ID = 25134-75136 Mean = 7.72 % Relative Standard Deviation = 3.2 Number of Observations = 16 Blind Sample ID = 25132-75130 Mean = 10.12 % Relative Standard Deviation = 2.2 Number of Observations = 24 Blind Sample ID = 25004-75154
The SGPlot Procedure


- Silica, FIL, DA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00955, MCode: CL151
Dates: 03/15/10 through 09/16/11
Open Data Set

Mean = 5.87 % Relative Standard Deviation = 3.2 Number of Observations = 24 Blind Sample ID = 75192-25DIW Mean = 8.61 % Relative Standard Deviation = 2.6 Number of Observations = 18 Blind Sample ID = 75190-25DIW Mean = 10.50 % Relative Standard Deviation = 4.2 Number of Observations = 24 Blind Sample ID = 75190-25192 Mean = 4.22 % Relative Standard Deviation = 3.5 Number of Observations = 32 Blind Sample ID = 75188-25DIW Mean = 7.10 % Relative Standard Deviation = 2.9 Number of Observations = 20 Blind Sample ID = 75188-25190 Mean = 8.17 % Relative Standard Deviation = 1.3 Number of Observations = 8 Blind Sample ID = 75186-25DIW Mean = 5.42 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 75184-25DIW Mean = 6.89 % Relative Standard Deviation = 4.2 Number of Observations = 15 Blind Sample ID = 75184-25188 Mean = 7.31 % Relative Standard Deviation = 2.9 Number of Observations = 22 Blind Sample ID = 25188-75192 Mean = 6.73 % Relative Standard Deviation = 2.3 Number of Observations = 11 Blind Sample ID = 25186-75188 Mean = 9.88 % Relative Standard Deviation = 2.3 Number of Observations = 8 Blind Sample ID = 25184-75186
The SGPlot Procedure


- Silica, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00955, MCode: PLA11
Dates: 10/01/96 through 09/30/11
Open Data Set

Mean = 2.48 % Relative Standard Deviation = 3.0 Number of Observations = 28 Blind Sample ID = 75DIW-25155 Mean = 1.78 % Relative Standard Deviation = 2.9 Number of Observations = 29 Blind Sample ID = 75DIW-25144 Mean = 2.30 % Relative Standard Deviation = 3.0 Number of Observations = 30 Blind Sample ID = 75DIW-25139 Mean = 1.67 % Relative Standard Deviation = 1.9 Number of Observations = 14 Blind Sample ID = 75DIW-25137 Mean = 10.71 % Relative Standard Deviation = 3.4 Number of Observations = 22 Blind Sample ID = 75197-25DIW Mean = 7.30 % Relative Standard Deviation = 1.9 Number of Observations = 23 Blind Sample ID = 75195-25197 Mean = 10.06 % Relative Standard Deviation = 4.3 Number of Observations = 48 Blind Sample ID = 75193-25DIW Mean = 14.00 % Relative Standard Deviation = 2.4 Number of Observations = 26 Blind Sample ID = 75193-25197 Mean = 3.48 % Relative Standard Deviation = 4.1 Number of Observations = 46 Blind Sample ID = 75191-25DIW Mean = 9.09 % Relative Standard Deviation = 3.1 Number of Observations = 48 Blind Sample ID = 75189-25DIW Mean = 12.39 % Relative Standard Deviation = 3.5 Number of Observations = 26 Blind Sample ID = 75189-25193 Mean = 10.17 % Relative Standard Deviation = 4.0 Number of Observations = 22 Blind Sample ID = 75189-25191 Mean = 4.89 % Relative Standard Deviation = 4.5 Number of Observations = 46 Blind Sample ID = 75187-25DIW Mean = 7.72 % Relative Standard Deviation = 2.6 Number of Observations = 21 Blind Sample ID = 75185-25DIW Mean = 6.29 % Relative Standard Deviation = 2.6 Number of Observations = 44 Blind Sample ID = 75183-25DIW Mean = 9.96 % Relative Standard Deviation = 1.5 Number of Observations = 18 Blind Sample ID = 75181-25DIW Mean = 11.22 % Relative Standard Deviation = 1.6 Number of Observations = 47 Blind Sample ID = 75179-25DIW Mean = 4.25 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 75175-25DIW Mean = 2.64 % Relative Standard Deviation = 2.2 Number of Observations = 31 Blind Sample ID = 75171-25DIW Mean = 4.66 % Relative Standard Deviation = 2.2 Number of Observations = 20 Blind Sample ID = 75169-25DIW Mean = 5.56 % Relative Standard Deviation = 2.5 Number of Observations = 14 Blind Sample ID = 50DIW-50145 Mean = 4.30 % Relative Standard Deviation = 1.6 Number of Observations = 30 Blind Sample ID = 50DIW-50138 Mean = 6.30 % Relative Standard Deviation = 2.3 Number of Observations = 26 Blind Sample ID = 50DIW-50136 Mean = 2.12 % Relative Standard Deviation = 1.8 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 5.66 % Relative Standard Deviation = 4.0 Number of Observations = 24 Blind Sample ID = 50187-50191 Mean = 9.42 % Relative Standard Deviation = 3.6 Number of Observations = 18 Blind Sample ID = 50187-50189 Mean = 7.42 % Relative Standard Deviation = 1.7 Number of Observations = 24 Blind Sample ID = 50187-50183 Mean = 8.33 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = 50185-50187 Mean = 9.28 % Relative Standard Deviation = 2.2 Number of Observations = 26 Blind Sample ID = 50183-50185 Mean = 12.75 % Relative Standard Deviation = 2.2 Number of Observations = 24 Blind Sample ID = 50177-50179 Mean = 2.82 % Relative Standard Deviation = 2.4 Number of Observations = 47 Blind Sample ID = 50175-50DIW Mean = 8.57 % Relative Standard Deviation = 3.8 Number of Observations = 23 Blind Sample ID = 50175-50173 Mean = 5.75 % Relative Standard Deviation = 4.0 Number of Observations = 23 Blind Sample ID = 50173-50DIW Mean = 1.78 % Relative Standard Deviation = 2.8 Number of Observations = 42 Blind Sample ID = 50171-50DIW Mean = 7.55 % Relative Standard Deviation = 3.1 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 2.92 % Relative Standard Deviation = 3.5 Number of Observations = 28 Blind Sample ID = 50167-50DIW Mean = 4.80 % Relative Standard Deviation = 2.8 Number of Observations = 36 Blind Sample ID = 50167-50171 Mean = 5.96 % Relative Standard Deviation = 2.6 Number of Observations = 32 Blind Sample ID = 50165-50169 Mean = 5.87 % Relative Standard Deviation = 3.5 Number of Observations = 32 Blind Sample ID = 50165-50167 Mean = 2.29 % Relative Standard Deviation = 1.5 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 7.50 % Relative Standard Deviation = 0.9 Number of Observations = 3 Blind Sample ID = 50161-50DIW Mean = 7.22 % Relative Standard Deviation = 3.8 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 12.73 % Relative Standard Deviation = 2.5 Number of Observations = 18 Blind Sample ID = 50147-50151 Mean = 17.03 % Relative Standard Deviation = 2.2 Number of Observations = 16 Blind Sample ID = 50145-50147 Mean = 12.20 % Relative Standard Deviation = 2.8 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 16.88 % Relative Standard Deviation = 2.2 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 7.39 % Relative Standard Deviation = 2.0 Number of Observations = 34 Blind Sample ID = 50142-50144 Mean = 10.15 % Relative Standard Deviation = 2.1 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 9.13 % Relative Standard Deviation = 2.1 Number of Observations = 34 Blind Sample ID = 50139-50141 Mean = 14.81 % Relative Standard Deviation = 1.7 Number of Observations = 18 Blind Sample ID = 50137-50143 Mean = 7.75 % Relative Standard Deviation = 1.9 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 8.13 % Relative Standard Deviation = 2.9 Number of Observations = 16 Blind Sample ID = 50137-50139 Mean = 10.67 % Relative Standard Deviation = 2.5 Number of Observations = 29 Blind Sample ID = 50136-50138 Mean = 6.83 % Relative Standard Deviation = 2.6 Number of Observations = 34 Blind Sample ID = 50135-50139 Mean = 5.52 % Relative Standard Deviation = 2.2 Number of Observations = 49 Blind Sample ID = 50135-50137 Mean = 8.83 % Relative Standard Deviation = 2.4 Number of Observations = 34 Blind Sample ID = 50134-50136 Mean = 3.51 % Relative Standard Deviation = 2.5 Number of Observations = 36 Blind Sample ID = 25DIW-75156 Mean = 1.05 % Relative Standard Deviation = 2.7 Number of Observations = 33 Blind Sample ID = 25DIW-75151 Mean = 9.17 % Relative Standard Deviation = 2.2 Number of Observations = 38 Blind Sample ID = 25DIW-75150 Mean = 5.42 % Relative Standard Deviation = 2.4 Number of Observations = 60 Blind Sample ID = 25DIW-75144 Mean = 6.63 % Relative Standard Deviation = 3.5 Number of Observations = 29 Blind Sample ID = 25DIW-75138 Mean = 11.84 % Relative Standard Deviation = 4.2 Number of Observations = 19 Blind Sample ID = 25195-75197 Mean = 7.26 % Relative Standard Deviation = 2.2 Number of Observations = 24 Blind Sample ID = 25193-75195 Mean = 11.25 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = 25191-75193 Mean = 12.08 % Relative Standard Deviation = 2.4 Number of Observations = 31 Blind Sample ID = 25183-75181 Mean = 14.44 % Relative Standard Deviation = 2.9 Number of Observations = 23 Blind Sample ID = 25181-75179 Mean = 9.92 % Relative Standard Deviation = 2.4 Number of Observations = 16 Blind Sample ID = 25179-75183 Mean = 11.83 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 25179-75177 Mean = 6.91 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 25177-75175 Mean = 5.21 % Relative Standard Deviation = 2.7 Number of Observations = 28 Blind Sample ID = 25171-75175 Mean = 6.03 % Relative Standard Deviation = 3.5 Number of Observations = 100 Blind Sample ID = 25169-75167 Mean = 6.16 % Relative Standard Deviation = 2.4 Number of Observations = 19 Blind Sample ID = 25167-75169 Mean = 1.44 % Relative Standard Deviation = 2.2 Number of Observations = 28 Blind Sample ID = 25165-75DIW Mean = 9.92 % Relative Standard Deviation = 2.0 Number of Observations = 32 Blind Sample ID = 25163-75159 Mean = 12.63 % Relative Standard Deviation = 2.1 Number of Observations = 36 Blind Sample ID = 25161-75159 Mean = 14.28 % Relative Standard Deviation = 1.8 Number of Observations = 32 Blind Sample ID = 25159-75161 Mean = 10.36 % Relative Standard Deviation = 2.7 Number of Observations = 28 Blind Sample ID = 25159-75155 Mean = 12.32 % Relative Standard Deviation = 1.4 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 8.23 % Relative Standard Deviation = 1.7 Number of Observations = 34 Blind Sample ID = 25156-75004 Mean = 13.42 % Relative Standard Deviation = 4.6 Number of Observations = 28 Blind Sample ID = 25155-75157 Mean = 6.85 % Relative Standard Deviation = 3.0 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 3.58 % Relative Standard Deviation = 1.9 Number of Observations = 28 Blind Sample ID = 25155-75151 Mean = 20.97 % Relative Standard Deviation = 2.8 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 18.85 % Relative Standard Deviation = 2.5 Number of Observations = 26 Blind Sample ID = 25151-75147 Mean = 9.96 % Relative Standard Deviation = 3.0 Number of Observations = 40 Blind Sample ID = 25150-75004 Mean = 14.47 % Relative Standard Deviation = 2.4 Number of Observations = 26 Blind Sample ID = 25147-75145 Mean = 8.07 % Relative Standard Deviation = 2.3 Number of Observations = 34 Blind Sample ID = 25146-75142 Mean = 8.77 % Relative Standard Deviation = 3.1 Number of Observations = 23 Blind Sample ID = 25144-75146 Mean = 9.15 % Relative Standard Deviation = 1.7 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 7.47 % Relative Standard Deviation = 1.9 Number of Observations = 24 Blind Sample ID = 25139-75137 Mean = 7.56 % Relative Standard Deviation = 2.0 Number of Observations = 26 Blind Sample ID = 25138-75140 Mean = 4.91 % Relative Standard Deviation = 2.4 Number of Observations = 14 Blind Sample ID = 25137-75135 Mean = 10.32 % Relative Standard Deviation = 1.9 Number of Observations = 32 Blind Sample ID = 25004-75154 Mean = 5.62 % Relative Standard Deviation = 2.5 Number of Observations = 36 Blind Sample ID = 25004-75152
The SGPlot Procedure


- Sodium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00930, MCode: PLA11
Dates: 10/01/96 through 09/30/11
Open Data Set

Mean = 1.24 % Relative Standard Deviation = 4.7 Number of Observations = 15 Blind Sample ID = P51 Mean = 0.59 % Relative Standard Deviation = 4.8 Number of Observations = 32 Blind Sample ID = P50 Mean = 0.54 % Relative Standard Deviation = 5.4 Number of Observations = 31 Blind Sample ID = P49 Mean = 1.03 % Relative Standard Deviation = 3.7 Number of Observations = 30 Blind Sample ID = P48 Mean = 1.69 % Relative Standard Deviation = 3.6 Number of Observations = 14 Blind Sample ID = P47 Mean = 0.65 % Relative Standard Deviation = 4.5 Number of Observations = 26 Blind Sample ID = P46 Mean = 0.13 % Relative Standard Deviation = 13.1 Number of Observations = 31 Blind Sample ID = P45 Mean = 0.99 % Relative Standard Deviation = 4.6 Number of Observations = 27 Blind Sample ID = P44 Mean = 0.24 % Relative Standard Deviation = 9.0 Number of Observations = 30 Blind Sample ID = P43 Mean = 0.32 % Relative Standard Deviation = 14.4 Number of Observations = 31 Blind Sample ID = P42 Mean = 0.50 % Relative Standard Deviation = 6.3 Number of Observations = 23 Blind Sample ID = P41 Mean = 1.79 % Relative Standard Deviation = 4.2 Number of Observations = 15 Blind Sample ID = P38 Mean = 0.80 % Relative Standard Deviation = 7.3 Number of Observations = 16 Blind Sample ID = P37 Mean = 0.39 % Relative Standard Deviation = 9.9 Number of Observations = 38 Blind Sample ID = P36 Mean = 2.15 % Relative Standard Deviation = 2.8 Number of Observations = 27 Blind Sample ID = P31 Mean = 0.33 % Relative Standard Deviation = 6.1 Number of Observations = 24 Blind Sample ID = P30 Mean = 4.31 % Relative Standard Deviation = 1.0 Number of Observations = 3 Blind Sample ID = P26 Mean = 0.25 % Relative Standard Deviation = 9.0 Number of Observations = 3 Blind Sample ID = P24 Mean = 6.96 % Relative Standard Deviation = 3.5 Number of Observations = 28 Blind Sample ID = 75DIW-25155 Mean = 11.05 % Relative Standard Deviation = 3.2 Number of Observations = 22 Blind Sample ID = 75DIW-25146 Mean = 22.80 % Relative Standard Deviation = 2.6 Number of Observations = 10 Blind Sample ID = 75DIW-25139 Mean = 7.81 % Relative Standard Deviation = 2.3 Number of Observations = 22 Blind Sample ID = 75DIW-25138 Mean = 5.48 % Relative Standard Deviation = 3.0 Number of Observations = 14 Blind Sample ID = 75DIW-25137 Mean = 8.71 % Relative Standard Deviation = 3.8 Number of Observations = 22 Blind Sample ID = 75DIW-25130 Mean = 28.88 % Relative Standard Deviation = 2.1 Number of Observations = 14 Blind Sample ID = 75197-25DIW Mean = 14.53 % Relative Standard Deviation = 2.0 Number of Observations = 16 Blind Sample ID = 75195-25197 Mean = 15.88 % Relative Standard Deviation = 4.6 Number of Observations = 32 Blind Sample ID = 75193-25DIW Mean = 25.61 % Relative Standard Deviation = 2.3 Number of Observations = 18 Blind Sample ID = 75193-25197 Mean = 7.73 % Relative Standard Deviation = 3.3 Number of Observations = 30 Blind Sample ID = 75191-25DIW Mean = 36.87 % Relative Standard Deviation = 5.1 Number of Observations = 32 Blind Sample ID = 75189-25DIW Mean = 41.37 % Relative Standard Deviation = 4.7 Number of Observations = 18 Blind Sample ID = 75189-25193 Mean = 38.77 % Relative Standard Deviation = 3.7 Number of Observations = 14 Blind Sample ID = 75189-25191 Mean = 13.64 % Relative Standard Deviation = 3.2 Number of Observations = 29 Blind Sample ID = 75187-25DIW Mean = 11.00 % Relative Standard Deviation = 3.1 Number of Observations = 14 Blind Sample ID = 75185-25DIW Mean = 9.65 % Relative Standard Deviation = 3.1 Number of Observations = 29 Blind Sample ID = 75183-25DIW Mean = 11.53 % Relative Standard Deviation = 2.3 Number of Observations = 11 Blind Sample ID = 75181-25DIW Mean = 19.82 % Relative Standard Deviation = 2.5 Number of Observations = 32 Blind Sample ID = 75179-25DIW Mean = 6.54 % Relative Standard Deviation = 3.9 Number of Observations = 16 Blind Sample ID = 75175-25DIW Mean = 6.58 % Relative Standard Deviation = 4.7 Number of Observations = 31 Blind Sample ID = 75171-25DIW Mean = 8.37 % Relative Standard Deviation = 3.7 Number of Observations = 20 Blind Sample ID = 75169-25DIW Mean = 20.57 % Relative Standard Deviation = 2.1 Number of Observations = 14 Blind Sample ID = 50DIW-50145 Mean = 15.61 % Relative Standard Deviation = 3.1 Number of Observations = 22 Blind Sample ID = 50DIW-50138 Mean = 14.38 % Relative Standard Deviation = 2.7 Number of Observations = 16 Blind Sample ID = 50187-50191 Mean = 33.82 % Relative Standard Deviation = 2.7 Number of Observations = 18 Blind Sample ID = 50187-50189 Mean = 15.53 % Relative Standard Deviation = 4.2 Number of Observations = 16 Blind Sample ID = 50187-50183 Mean = 16.47 % Relative Standard Deviation = 3.3 Number of Observations = 16 Blind Sample ID = 50185-50187 Mean = 13.77 % Relative Standard Deviation = 3.0 Number of Observations = 18 Blind Sample ID = 50183-50185 Mean = 32.36 % Relative Standard Deviation = 2.5 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 4.37 % Relative Standard Deviation = 2.6 Number of Observations = 31 Blind Sample ID = 50175-50DIW Mean = 22.64 % Relative Standard Deviation = 4.1 Number of Observations = 16 Blind Sample ID = 50175-50173 Mean = 18.43 % Relative Standard Deviation = 3.8 Number of Observations = 15 Blind Sample ID = 50173-50DIW Mean = 4.35 % Relative Standard Deviation = 3.3 Number of Observations = 35 Blind Sample ID = 50171-50DIW Mean = 22.68 % Relative Standard Deviation = 3.5 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 3.56 % Relative Standard Deviation = 1.3 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 8.12 % Relative Standard Deviation = 4.4 Number of Observations = 36 Blind Sample ID = 50167-50171 Mean = 10.78 % Relative Standard Deviation = 2.7 Number of Observations = 32 Blind Sample ID = 50165-50169 Mean = 8.98 % Relative Standard Deviation = 3.5 Number of Observations = 32 Blind Sample ID = 50165-50167 Mean = 19.11 % Relative Standard Deviation = 1.2 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 21.10 % Relative Standard Deviation = 3.6 Number of Observations = 3 Blind Sample ID = 50161-50DIW Mean = 35.84 % Relative Standard Deviation = 5.0 Number of Observations = 20 Blind Sample ID = 50158-50DIW Mean = 30.74 % Relative Standard Deviation = 2.3 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 22.02 % Relative Standard Deviation = 2.6 Number of Observations = 44 Blind Sample ID = 50156-50DIW Mean = 68.98 % Relative Standard Deviation = 2.4 Number of Observations = 44 Blind Sample ID = 50154-50DIW Mean = 7.97 % Relative Standard Deviation = 3.6 Number of Observations = 40 Blind Sample ID = 50152-50DIW Mean = 54.01 % Relative Standard Deviation = 2.3 Number of Observations = 18 Blind Sample ID = 50147-50151 Mean = 46.69 % Relative Standard Deviation = 1.3 Number of Observations = 16 Blind Sample ID = 50145-50147 Mean = 44.77 % Relative Standard Deviation = 1.4 Number of Observations = 21 Blind Sample ID = 50143-50151 Mean = 37.86 % Relative Standard Deviation = 2.1 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 57.66 % Relative Standard Deviation = 2.7 Number of Observations = 18 Blind Sample ID = 50140-50144 Mean = 65.82 % Relative Standard Deviation = 3.0 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 63.31 % Relative Standard Deviation = 1.6 Number of Observations = 10 Blind Sample ID = 50139-50141 Mean = 35.20 % Relative Standard Deviation = 2.6 Number of Observations = 48 Blind Sample ID = 50138-50140 Mean = 28.23 % Relative Standard Deviation = 2.6 Number of Observations = 18 Blind Sample ID = 50137-50143 Mean = 27.95 % Relative Standard Deviation = 2.7 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 57.25 % Relative Standard Deviation = 2.3 Number of Observations = 16 Blind Sample ID = 50137-50139 Mean = 61.45 % Relative Standard Deviation = 3.2 Number of Observations = 4 Blind Sample ID = 50135-50139 Mean = 26.69 % Relative Standard Deviation = 2.4 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 50.14 % Relative Standard Deviation = 2.2 Number of Observations = 18 Blind Sample ID = 50134-50140 Mean = 54.11 % Relative Standard Deviation = 2.6 Number of Observations = 18 Blind Sample ID = 50132-50134 Mean = 41.46 % Relative Standard Deviation = 2.2 Number of Observations = 24 Blind Sample ID = 50130-50132 Mean = 39.46 % Relative Standard Deviation = 2.3 Number of Observations = 16 Blind Sample ID = 50004-50DIW Mean = 41.34 % Relative Standard Deviation = 2.3 Number of Observations = 33 Blind Sample ID = 25DIW-75151 Mean = 112.57 % Relative Standard Deviation = 2.8 Number of Observations = 26 Blind Sample ID = 25DIW-75142 Mean = 80.15 % Relative Standard Deviation = 2.1 Number of Observations = 52 Blind Sample ID = 25DIW-75136 Mean = 30.35 % Relative Standard Deviation = 2.3 Number of Observations = 11 Blind Sample ID = 25195-75197 Mean = 10.39 % Relative Standard Deviation = 2.0 Number of Observations = 16 Blind Sample ID = 25193-75195 Mean = 18.11 % Relative Standard Deviation = 4.4 Number of Observations = 16 Blind Sample ID = 25191-75193 Mean = 14.84 % Relative Standard Deviation = 3.1 Number of Observations = 23 Blind Sample ID = 25183-75181 Mean = 23.80 % Relative Standard Deviation = 2.4 Number of Observations = 15 Blind Sample ID = 25181-75179 Mean = 16.52 % Relative Standard Deviation = 1.9 Number of Observations = 8 Blind Sample ID = 25179-75183 Mean = 34.83 % Relative Standard Deviation = 4.2 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 15.83 % Relative Standard Deviation = 4.1 Number of Observations = 16 Blind Sample ID = 25177-75175 Mean = 8.67 % Relative Standard Deviation = 2.6 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 8.35 % Relative Standard Deviation = 4.3 Number of Observations = 76 Blind Sample ID = 25169-75167 Mean = 10.27 % Relative Standard Deviation = 3.9 Number of Observations = 19 Blind Sample ID = 25167-75169 Mean = 2.59 % Relative Standard Deviation = 8.0 Number of Observations = 4 Blind Sample ID = 25165-75DIW Mean = 85.71 % Relative Standard Deviation = 2.5 Number of Observations = 32 Blind Sample ID = 25163-75159 Mean = 59.61 % Relative Standard Deviation = 3.5 Number of Observations = 20 Blind Sample ID = 25162-75158 Mean = 87.36 % Relative Standard Deviation = 2.8 Number of Observations = 36 Blind Sample ID = 25161-75159 Mean = 18.34 % Relative Standard Deviation = 2.7 Number of Observations = 21 Blind Sample ID = 25160-75DIW Mean = 57.65 % Relative Standard Deviation = 2.1 Number of Observations = 32 Blind Sample ID = 25159-75161 Mean = 45.76 % Relative Standard Deviation = 2.3 Number of Observations = 28 Blind Sample ID = 25159-75155 Mean = 90.93 % Relative Standard Deviation = 1.9 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 54.48 % Relative Standard Deviation = 2.1 Number of Observations = 28 Blind Sample ID = 25155-75157 Mean = 28.26 % Relative Standard Deviation = 2.4 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 49.00 % Relative Standard Deviation = 1.7 Number of Observations = 28 Blind Sample ID = 25155-75151 Mean = 46.83 % Relative Standard Deviation = 2.6 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 92.90 % Relative Standard Deviation = 2.6 Number of Observations = 20 Blind Sample ID = 25154-75004 Mean = 17.04 % Relative Standard Deviation = 2.7 Number of Observations = 40 Blind Sample ID = 25152-75150 Mean = 53.81 % Relative Standard Deviation = 2.6 Number of Observations = 26 Blind Sample ID = 25151-75147 Mean = 64.12 % Relative Standard Deviation = 2.4 Number of Observations = 23 Blind Sample ID = 25150-75004 Mean = 44.15 % Relative Standard Deviation = 2.5 Number of Observations = 26 Blind Sample ID = 25147-75145 Mean = 68.20 % Relative Standard Deviation = 2.5 Number of Observations = 18 Blind Sample ID = 25146-75144 Mean = 35.27 % Relative Standard Deviation = 2.6 Number of Observations = 16 Blind Sample ID = 25146-75138 Mean = 132.24 % Relative Standard Deviation = 2.4 Number of Observations = 28 Blind Sample ID = 25144-75142 Mean = 77.50 % Relative Standard Deviation = 1.8 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 33.33 % Relative Standard Deviation = 3.0 Number of Observations = 32 Blind Sample ID = 25140-75138 Mean = 39.41 % Relative Standard Deviation = 1.8 Number of Observations = 24 Blind Sample ID = 25139-75137 Mean = 95.10 % Relative Standard Deviation = 1.7 Number of Observations = 28 Blind Sample ID = 25134-75136 Mean = 38.85 % Relative Standard Deviation = 2.3 Number of Observations = 16 Blind Sample ID = 25132-75130 Mean = 122.26 % Relative Standard Deviation = 2.2 Number of Observations = 24 Blind Sample ID = 25004-75154
The SGPlot Procedure


- Sodium, FIL, ICP-OES, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00930, MCode: PLA09
Dates: 10/23/96 through 01/31/97
Open Data Set

Mean = 0.50 % Relative Standard Deviation = 0.0 Number of Observations = 3 Blind Sample ID = P23 Mean = 0.20 % Relative Standard Deviation = 0.0 Number of Observations = 3 Blind Sample ID = P21
The SGPlot Procedure


- Sodium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00929, MCode: PLA15
Dates: 10/30/07 through 09/22/11
Open Data Set

Mean = 27.22 % Relative Standard Deviation = 1.6 Number of Observations = 4 Blind Sample ID = 75197-25DIW Mean = 14.00 % Relative Standard Deviation = 3.8 Number of Observations = 6 Blind Sample ID = 75195-25197 Mean = 15.34 % Relative Standard Deviation = 3.0 Number of Observations = 16 Blind Sample ID = 75193-25DIW Mean = 24.24 % Relative Standard Deviation = 2.2 Number of Observations = 8 Blind Sample ID = 75193-25197 Mean = 7.47 % Relative Standard Deviation = 2.7 Number of Observations = 16 Blind Sample ID = 75191-25DIW Mean = 35.41 % Relative Standard Deviation = 5.0 Number of Observations = 12 Blind Sample ID = 75189-25DIW Mean = 41.24 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 75189-25193 Mean = 39.01 % Relative Standard Deviation = 2.4 Number of Observations = 6 Blind Sample ID = 75189-25191 Mean = 13.22 % Relative Standard Deviation = 3.6 Number of Observations = 12 Blind Sample ID = 75187-25DIW Mean = 10.86 % Relative Standard Deviation = 2.9 Number of Observations = 6 Blind Sample ID = 75185-25DIW Mean = 9.61 % Relative Standard Deviation = 2.0 Number of Observations = 6 Blind Sample ID = 75183-25DIW Mean = 13.88 % Relative Standard Deviation = 3.0 Number of Observations = 6 Blind Sample ID = 50187-50191 Mean = 33.77 % Relative Standard Deviation = 6.4 Number of Observations = 8 Blind Sample ID = 50187-50189 Mean = 15.15 % Relative Standard Deviation = 2.1 Number of Observations = 6 Blind Sample ID = 50187-50183 Mean = 16.24 % Relative Standard Deviation = 3.2 Number of Observations = 8 Blind Sample ID = 50185-50187 Mean = 13.58 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = 50183-50185 Mean = 28.95 % Relative Standard Deviation = 2.7 Number of Observations = 4 Blind Sample ID = 25195-75197 Mean = 9.94 % Relative Standard Deviation = 3.5 Number of Observations = 6 Blind Sample ID = 25193-75195 Mean = 18.00 % Relative Standard Deviation = 1.9 Number of Observations = 6 Blind Sample ID = 25191-75193
The SGPlot Procedure


- Solids @105 Deg C, UNF, GRAV -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00500, MCode: ROE12
Dates: 10/20/03 through 08/29/11
Open Data Set

Mean = 45.65 % Relative Standard Deviation = 22.8 Number of Observations = 8 Blind Sample ID = 75192-25DIW Mean = 89.76 % Relative Standard Deviation = 5.4 Number of Observations = 4 Blind Sample ID = 75190-25DIW Mean = 105.16 % Relative Standard Deviation = 4.1 Number of Observations = 4 Blind Sample ID = 75190-25192 Mean = 144.34 % Relative Standard Deviation = 4.7 Number of Observations = 16 Blind Sample ID = 75188-25DIW Mean = 169.52 % Relative Standard Deviation = 10.3 Number of Observations = 4 Blind Sample ID = 75188-25190 Mean = 85.71 % Relative Standard Deviation = 14.1 Number of Observations = 4 Blind Sample ID = 75186-25DIW Mean = 75.83 % Relative Standard Deviation = 6.4 Number of Observations = 15 Blind Sample ID = 75184-25DIW Mean = 124.63 % Relative Standard Deviation = 6.1 Number of Observations = 4 Blind Sample ID = 75184-25188 Mean = 76.45 % Relative Standard Deviation = 5.4 Number of Observations = 4 Blind Sample ID = 75182-25DIW Mean = 131.29 % Relative Standard Deviation = 4.1 Number of Observations = 15 Blind Sample ID = 75180-25DIW Mean = 318.58 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = 75178-25DIW Mean = 67.84 % Relative Standard Deviation = 5.4 Number of Observations = 14 Blind Sample ID = 75176-25DIW Mean = 100.25 % Relative Standard Deviation = 4.0 Number of Observations = 8 Blind Sample ID = 75174-25DIW Mean = 70.28 % Relative Standard Deviation = 8.3 Number of Observations = 12 Blind Sample ID = 75172-25DIW Mean = 98.51 % Relative Standard Deviation = 9.8 Number of Observations = 4 Blind Sample ID = 75172-25176 Mean = 50.36 % Relative Standard Deviation = 8.5 Number of Observations = 4 Blind Sample ID = 75170-25DIW Mean = 203.16 % Relative Standard Deviation = 2.0 Number of Observations = 4 Blind Sample ID = 75166-25DIW Mean = 52.64 % Relative Standard Deviation = 9.7 Number of Observations = 11 Blind Sample ID = 50168-50DIW Mean = 85.11 % Relative Standard Deviation = 7.0 Number of Observations = 4 Blind Sample ID = 50168-50170 Mean = 151.65 % Relative Standard Deviation = 1.6 Number of Observations = 4 Blind Sample ID = 50168-50164 Mean = 97.03 % Relative Standard Deviation = 7.9 Number of Observations = 8 Blind Sample ID = 50164-50DIW Mean = 230.23 % Relative Standard Deviation = 0.7 Number of Observations = 4 Blind Sample ID = 50164-50166 Mean = 198.82 % Relative Standard Deviation = 6.6 Number of Observations = 16 Blind Sample ID = 50162-50164 Mean = 135.86 % Relative Standard Deviation = 3.8 Number of Observations = 32 Blind Sample ID = 45160-55DIW Mean = 78.69 % Relative Standard Deviation = 14.6 Number of Observations = 3 Blind Sample ID = 25188-75192 Mean = 172.91 % Relative Standard Deviation = 3.1 Number of Observations = 4 Blind Sample ID = 25186-75188 Mean = 119.44 % Relative Standard Deviation = 5.1 Number of Observations = 8 Blind Sample ID = 25184-75186 Mean = 95.07 % Relative Standard Deviation = 5.5 Number of Observations = 6 Blind Sample ID = 25184-75182 Mean = 151.70 % Relative Standard Deviation = 3.1 Number of Observations = 4 Blind Sample ID = 25182-75180 Mean = 119.87 % Relative Standard Deviation = 10.8 Number of Observations = 4 Blind Sample ID = 25180-75184 Mean = 372.48 % Relative Standard Deviation = 3.2 Number of Observations = 4 Blind Sample ID = 25180-75178 Mean = 117.95 % Relative Standard Deviation = 6.0 Number of Observations = 4 Blind Sample ID = 25180-75176 Mean = 175.27 % Relative Standard Deviation = 3.9 Number of Observations = 4 Blind Sample ID = 25178-75176 Mean = 96.32 % Relative Standard Deviation = 7.5 Number of Observations = 4 Blind Sample ID = 25174-75176 Mean = 127.45 % Relative Standard Deviation = 3.8 Number of Observations = 4 Blind Sample ID = 25172-75174 Mean = 79.20 % Relative Standard Deviation = 6.6 Number of Observations = 4 Blind Sample ID = 25172-75170 Mean = 108.26 % Relative Standard Deviation = 5.1 Number of Observations = 4 Blind Sample ID = 25172-75168 Mean = 223.42 % Relative Standard Deviation = 4.2 Number of Observations = 8 Blind Sample ID = 25168-75166
The SGPlot Procedure


- Solids, ROE@180 Deg C (TDS), FIL, GRAV -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 70300, MCode: ROE10
Dates: 10/01/96 through 09/28/11
Open Data Set

Mean = 138.83 % Relative Standard Deviation = 3.2 Number of Observations = 30 Blind Sample ID = 75DIW-25144 Mean = 39.86 % Relative Standard Deviation = 10.2 Number of Observations = 22 Blind Sample ID = 75DIW-25138 Mean = 50.59 % Relative Standard Deviation = 14.6 Number of Observations = 22 Blind Sample ID = 75DIW-25130 Mean = 45.28 % Relative Standard Deviation = 20.1 Number of Observations = 22 Blind Sample ID = 75192-25DIW Mean = 96.31 % Relative Standard Deviation = 9.9 Number of Observations = 20 Blind Sample ID = 75190-25DIW Mean = 109.34 % Relative Standard Deviation = 6.3 Number of Observations = 23 Blind Sample ID = 75190-25192 Mean = 144.45 % Relative Standard Deviation = 7.0 Number of Observations = 40 Blind Sample ID = 75188-25DIW Mean = 174.48 % Relative Standard Deviation = 5.2 Number of Observations = 19 Blind Sample ID = 75188-25190 Mean = 99.71 % Relative Standard Deviation = 11.3 Number of Observations = 24 Blind Sample ID = 75186-25DIW Mean = 79.47 % Relative Standard Deviation = 6.5 Number of Observations = 45 Blind Sample ID = 75184-25DIW Mean = 125.64 % Relative Standard Deviation = 7.0 Number of Observations = 21 Blind Sample ID = 75184-25188 Mean = 74.54 % Relative Standard Deviation = 11.4 Number of Observations = 24 Blind Sample ID = 75182-25DIW Mean = 131.61 % Relative Standard Deviation = 5.5 Number of Observations = 48 Blind Sample ID = 75180-25DIW Mean = 308.39 % Relative Standard Deviation = 3.7 Number of Observations = 24 Blind Sample ID = 75178-25DIW Mean = 70.89 % Relative Standard Deviation = 9.0 Number of Observations = 47 Blind Sample ID = 75176-25DIW Mean = 107.81 % Relative Standard Deviation = 10.6 Number of Observations = 23 Blind Sample ID = 75174-25DIW Mean = 71.50 % Relative Standard Deviation = 10.2 Number of Observations = 46 Blind Sample ID = 75172-25DIW Mean = 93.25 % Relative Standard Deviation = 8.0 Number of Observations = 21 Blind Sample ID = 75172-25176 Mean = 52.53 % Relative Standard Deviation = 8.3 Number of Observations = 22 Blind Sample ID = 75170-25DIW Mean = 192.59 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 75166-25DIW Mean = 137.69 % Relative Standard Deviation = 6.2 Number of Observations = 36 Blind Sample ID = 75162-25DIW Mean = 77.15 % Relative Standard Deviation = 6.6 Number of Observations = 48 Blind Sample ID = 50DIW-50138 Mean = 287.75 % Relative Standard Deviation = 2.3 Number of Observations = 52 Blind Sample ID = 50DIW-50136 Mean = 101.20 % Relative Standard Deviation = 5.6 Number of Observations = 30 Blind Sample ID = 50DIW-50130 Mean = 52.32 % Relative Standard Deviation = 8.4 Number of Observations = 47 Blind Sample ID = 50168-50DIW Mean = 86.68 % Relative Standard Deviation = 4.7 Number of Observations = 23 Blind Sample ID = 50168-50170 Mean = 146.35 % Relative Standard Deviation = 5.6 Number of Observations = 24 Blind Sample ID = 50168-50164 Mean = 97.95 % Relative Standard Deviation = 8.4 Number of Observations = 48 Blind Sample ID = 50164-50DIW Mean = 222.65 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = 50164-50166 Mean = 193.36 % Relative Standard Deviation = 5.3 Number of Observations = 24 Blind Sample ID = 50162-50164 Mean = 242.49 % Relative Standard Deviation = 3.2 Number of Observations = 48 Blind Sample ID = 50162-50160 Mean = 241.91 % Relative Standard Deviation = 2.1 Number of Observations = 36 Blind Sample ID = 50160-50162 Mean = 344.22 % Relative Standard Deviation = 1.3 Number of Observations = 59 Blind Sample ID = 50160-50158 Mean = 192.12 % Relative Standard Deviation = 1.7 Number of Observations = 44 Blind Sample ID = 50158-50DIW Mean = 118.60 % Relative Standard Deviation = 3.8 Number of Observations = 43 Blind Sample ID = 50156-50DIW Mean = 353.45 % Relative Standard Deviation = 1.6 Number of Observations = 44 Blind Sample ID = 50154-50DIW Mean = 35.35 % Relative Standard Deviation = 21.3 Number of Observations = 40 Blind Sample ID = 50152-50DIW Mean = 657.03 % Relative Standard Deviation = 1.4 Number of Observations = 32 Blind Sample ID = 50142-50144 Mean = 473.33 % Relative Standard Deviation = 0.9 Number of Observations = 18 Blind Sample ID = 50140-50144 Mean = 271.34 % Relative Standard Deviation = 2.0 Number of Observations = 47 Blind Sample ID = 50138-50140 Mean = 363.23 % Relative Standard Deviation = 1.8 Number of Observations = 30 Blind Sample ID = 50136-50138 Mean = 384.24 % Relative Standard Deviation = 1.1 Number of Observations = 17 Blind Sample ID = 50134-50140 Mean = 471.18 % Relative Standard Deviation = 2.4 Number of Observations = 68 Blind Sample ID = 50134-50136 Mean = 328.94 % Relative Standard Deviation = 3.2 Number of Observations = 18 Blind Sample ID = 50132-50134 Mean = 388.03 % Relative Standard Deviation = 2.1 Number of Observations = 30 Blind Sample ID = 50130-50136 Mean = 240.00 % Relative Standard Deviation = 3.6 Number of Observations = 24 Blind Sample ID = 50130-50132 Mean = 212.56 % Relative Standard Deviation = 3.2 Number of Observations = 16 Blind Sample ID = 50004-50DIW Mean = 181.51 % Relative Standard Deviation = 2.3 Number of Observations = 36 Blind Sample ID = 25DIW-75156 Mean = 67.41 % Relative Standard Deviation = 11.0 Number of Observations = 41 Blind Sample ID = 25DIW-75150 Mean = 415.67 % Relative Standard Deviation = 1.7 Number of Observations = 60 Blind Sample ID = 25DIW-75144 Mean = 568.44 % Relative Standard Deviation = 0.7 Number of Observations = 25 Blind Sample ID = 25DIW-75142 Mean = 114.40 % Relative Standard Deviation = 2.8 Number of Observations = 30 Blind Sample ID = 25DIW-75138 Mean = 428.04 % Relative Standard Deviation = 2.4 Number of Observations = 52 Blind Sample ID = 25DIW-75136 Mean = 93.49 % Relative Standard Deviation = 6.8 Number of Observations = 18 Blind Sample ID = 25188-75192 Mean = 177.70 % Relative Standard Deviation = 3.9 Number of Observations = 23 Blind Sample ID = 25186-75188 Mean = 123.15 % Relative Standard Deviation = 6.6 Number of Observations = 24 Blind Sample ID = 25184-75186 Mean = 102.25 % Relative Standard Deviation = 7.6 Number of Observations = 24 Blind Sample ID = 25184-75182 Mean = 154.82 % Relative Standard Deviation = 4.1 Number of Observations = 24 Blind Sample ID = 25182-75180 Mean = 120.77 % Relative Standard Deviation = 4.9 Number of Observations = 23 Blind Sample ID = 25180-75184 Mean = 349.54 % Relative Standard Deviation = 1.6 Number of Observations = 24 Blind Sample ID = 25180-75178 Mean = 111.45 % Relative Standard Deviation = 5.3 Number of Observations = 23 Blind Sample ID = 25180-75176 Mean = 171.12 % Relative Standard Deviation = 3.1 Number of Observations = 23 Blind Sample ID = 25178-75176 Mean = 100.50 % Relative Standard Deviation = 8.1 Number of Observations = 22 Blind Sample ID = 25174-75176 Mean = 131.30 % Relative Standard Deviation = 9.0 Number of Observations = 22 Blind Sample ID = 25172-75174 Mean = 74.22 % Relative Standard Deviation = 6.9 Number of Observations = 22 Blind Sample ID = 25172-75170 Mean = 99.69 % Relative Standard Deviation = 5.1 Number of Observations = 24 Blind Sample ID = 25172-75168 Mean = 218.94 % Relative Standard Deviation = 2.8 Number of Observations = 25 Blind Sample ID = 25168-75166 Mean = 274.57 % Relative Standard Deviation = 2.4 Number of Observations = 24 Blind Sample ID = 25164-75160 Mean = 333.00 % Relative Standard Deviation = 1.6 Number of Observations = 44 Blind Sample ID = 25162-75158 Mean = 73.53 % Relative Standard Deviation = 5.3 Number of Observations = 44 Blind Sample ID = 25160-75DIW Mean = 381.82 % Relative Standard Deviation = 1.5 Number of Observations = 36 Blind Sample ID = 25156-75004 Mean = 494.03 % Relative Standard Deviation = 2.9 Number of Observations = 19 Blind Sample ID = 25154-75004 Mean = 82.75 % Relative Standard Deviation = 8.6 Number of Observations = 40 Blind Sample ID = 25152-75150 Mean = 345.43 % Relative Standard Deviation = 2.4 Number of Observations = 63 Blind Sample ID = 25150-75004 Mean = 476.06 % Relative Standard Deviation = 0.9 Number of Observations = 18 Blind Sample ID = 25146-75144 Mean = 621.88 % Relative Standard Deviation = 1.6 Number of Observations = 33 Blind Sample ID = 25146-75142 Mean = 177.94 % Relative Standard Deviation = 2.0 Number of Observations = 16 Blind Sample ID = 25146-75138 Mean = 324.52 % Relative Standard Deviation = 1.6 Number of Observations = 25 Blind Sample ID = 25144-75146 Mean = 701.58 % Relative Standard Deviation = 1.8 Number of Observations = 26 Blind Sample ID = 25144-75142 Mean = 213.72 % Relative Standard Deviation = 2.7 Number of Observations = 32 Blind Sample ID = 25140-75138 Mean = 332.08 % Relative Standard Deviation = 1.5 Number of Observations = 25 Blind Sample ID = 25138-75140 Mean = 523.56 % Relative Standard Deviation = 1.3 Number of Observations = 27 Blind Sample ID = 25134-75136 Mean = 221.25 % Relative Standard Deviation = 2.6 Number of Observations = 16 Blind Sample ID = 25132-75130 Mean = 641.07 % Relative Standard Deviation = 1.5 Number of Observations = 60 Blind Sample ID = 25004-75154 Mean = 155.00 % Relative Standard Deviation = 6.4 Number of Observations = 39 Blind Sample ID = 25004-75152
The SGPlot Procedure


- Specific Cond, LAB, UNF -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 90095, MCode: WHT03
Dates: 10/01/96 through 09/30/11
Open Data Set

Mean = 90.95 % Relative Standard Deviation = 1.6 Number of Observations = 4 Blind Sample ID = 75DIW-25130 Mean = 76.71 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = 75192-25DIW Mean = 159.85 % Relative Standard Deviation = 1.1 Number of Observations = 23 Blind Sample ID = 75190-25DIW Mean = 184.70 % Relative Standard Deviation = 1.6 Number of Observations = 24 Blind Sample ID = 75190-25192 Mean = 254.06 % Relative Standard Deviation = 1.8 Number of Observations = 44 Blind Sample ID = 75188-25DIW Mean = 302.41 % Relative Standard Deviation = 0.9 Number of Observations = 22 Blind Sample ID = 75188-25190 Mean = 166.96 % Relative Standard Deviation = 1.5 Number of Observations = 24 Blind Sample ID = 75186-25DIW Mean = 131.48 % Relative Standard Deviation = 2.9 Number of Observations = 47 Blind Sample ID = 75184-25DIW Mean = 212.55 % Relative Standard Deviation = 1.5 Number of Observations = 24 Blind Sample ID = 75184-25188 Mean = 130.66 % Relative Standard Deviation = 1.2 Number of Observations = 24 Blind Sample ID = 75182-25DIW Mean = 235.25 % Relative Standard Deviation = 1.9 Number of Observations = 48 Blind Sample ID = 75180-25DIW Mean = 490.30 % Relative Standard Deviation = 0.6 Number of Observations = 24 Blind Sample ID = 75178-25DIW Mean = 121.22 % Relative Standard Deviation = 2.5 Number of Observations = 46 Blind Sample ID = 75176-25DIW Mean = 192.16 % Relative Standard Deviation = 3.6 Number of Observations = 24 Blind Sample ID = 75174-25DIW Mean = 119.96 % Relative Standard Deviation = 2.5 Number of Observations = 46 Blind Sample ID = 75172-25DIW Mean = 159.95 % Relative Standard Deviation = 1.2 Number of Observations = 21 Blind Sample ID = 75172-25176 Mean = 85.19 % Relative Standard Deviation = 3.7 Number of Observations = 21 Blind Sample ID = 75170-25DIW Mean = 320.82 % Relative Standard Deviation = 4.8 Number of Observations = 24 Blind Sample ID = 75166-25DIW Mean = 177.17 % Relative Standard Deviation = 1.8 Number of Observations = 6 Blind Sample ID = 50DIW-50130 Mean = 92.59 % Relative Standard Deviation = 2.9 Number of Observations = 46 Blind Sample ID = 50168-50DIW Mean = 147.54 % Relative Standard Deviation = 1.8 Number of Observations = 23 Blind Sample ID = 50168-50170 Mean = 232.57 % Relative Standard Deviation = 2.7 Number of Observations = 24 Blind Sample ID = 50168-50164 Mean = 144.41 % Relative Standard Deviation = 1.7 Number of Observations = 22 Blind Sample ID = 50164-50DIW Mean = 353.38 % Relative Standard Deviation = 4.4 Number of Observations = 24 Blind Sample ID = 50164-50166 Mean = 764.40 % Relative Standard Deviation = 2.1 Number of Observations = 10 Blind Sample ID = 50134-50136 Mean = 545.67 % Relative Standard Deviation = 1.6 Number of Observations = 3 Blind Sample ID = 50132-50134 Mean = 627.75 % Relative Standard Deviation = 2.5 Number of Observations = 4 Blind Sample ID = 50130-50136 Mean = 711.00 % Relative Standard Deviation = 0.6 Number of Observations = 3 Blind Sample ID = 25DIW-75136 Mean = 162.71 % Relative Standard Deviation = 1.1 Number of Observations = 24 Blind Sample ID = 25188-75192 Mean = 306.98 % Relative Standard Deviation = 1.3 Number of Observations = 24 Blind Sample ID = 25186-75188 Mean = 209.82 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 25184-75186 Mean = 172.30 % Relative Standard Deviation = 1.4 Number of Observations = 24 Blind Sample ID = 25184-75182 Mean = 278.42 % Relative Standard Deviation = 1.3 Number of Observations = 24 Blind Sample ID = 25182-75180 Mean = 209.67 % Relative Standard Deviation = 1.0 Number of Observations = 24 Blind Sample ID = 25180-75184 Mean = 560.58 % Relative Standard Deviation = 0.6 Number of Observations = 24 Blind Sample ID = 25180-75178 Mean = 197.61 % Relative Standard Deviation = 0.9 Number of Observations = 23 Blind Sample ID = 25180-75176 Mean = 287.37 % Relative Standard Deviation = 0.7 Number of Observations = 23 Blind Sample ID = 25178-75176 Mean = 183.44 % Relative Standard Deviation = 1.5 Number of Observations = 21 Blind Sample ID = 25174-75176 Mean = 231.30 % Relative Standard Deviation = 1.2 Number of Observations = 22 Blind Sample ID = 25172-75174 Mean = 124.72 % Relative Standard Deviation = 1.4 Number of Observations = 22 Blind Sample ID = 25172-75170 Mean = 174.92 % Relative Standard Deviation = 2.4 Number of Observations = 24 Blind Sample ID = 25172-75168 Mean = 350.08 % Relative Standard Deviation = 2.3 Number of Observations = 25 Blind Sample ID = 25168-75166 Mean = 848.50 % Relative Standard Deviation = 1.0 Number of Observations = 4 Blind Sample ID = 25134-75136 Mean = 372.67 % Relative Standard Deviation = 0.9 Number of Observations = 3 Blind Sample ID = 25132-75130
The SGPlot Procedure


- Specific Cond, LAB, UNF, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 90095, MCode: WHT01
Dates: 10/23/96 through 08/15/00
Open Data Set

Mean = 60.73 % Relative Standard Deviation = 0.4 Number of Observations = 4 Blind Sample ID = P31 Mean = 18.39 % Relative Standard Deviation = 2.3 Number of Observations = 8 Blind Sample ID = P29 Mean = 37.03 % Relative Standard Deviation = 2.5 Number of Observations = 4 Blind Sample ID = P28 Mean = 26.17 % Relative Standard Deviation = 0.7 Number of Observations = 4 Blind Sample ID = P27 Mean = 36.93 % Relative Standard Deviation = 2.6 Number of Observations = 4 Blind Sample ID = P26 Mean = 20.90 % Relative Standard Deviation = 0.8 Number of Observations = 4 Blind Sample ID = P25 Mean = 12.75 % Relative Standard Deviation = 17.7 Number of Observations = 12 Blind Sample ID = P24 Mean = 13.95 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = P23 Mean = 42.29 % Relative Standard Deviation = 7.9 Number of Observations = 8 Blind Sample ID = P21
The SGPlot Procedure


- Sulfate, FIL, IC -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00945, MCode: IC022
Dates: 10/01/96 through 09/21/11
Open Data Set

Mean = 3.12 % Relative Standard Deviation = 12.2 Number of Observations = 25 Blind Sample ID = P31 Mean = 0.45 % Relative Standard Deviation = 79.5 Number of Observations = 23 Blind Sample ID = P30 Mean = 16.24 % Relative Standard Deviation = 3.5 Number of Observations = 22 Blind Sample ID = 75DIW-25146 Mean = 51.31 % Relative Standard Deviation = 1.9 Number of Observations = 30 Blind Sample ID = 75DIW-25144 Mean = 6.55 % Relative Standard Deviation = 3.3 Number of Observations = 21 Blind Sample ID = 75DIW-25138 Mean = 13.78 % Relative Standard Deviation = 5.2 Number of Observations = 22 Blind Sample ID = 75DIW-25130 Mean = 3.45 % Relative Standard Deviation = 4.8 Number of Observations = 24 Blind Sample ID = 75192-25DIW Mean = 5.66 % Relative Standard Deviation = 2.1 Number of Observations = 20 Blind Sample ID = 75190-25DIW Mean = 6.65 % Relative Standard Deviation = 4.8 Number of Observations = 23 Blind Sample ID = 75190-25192 Mean = 24.02 % Relative Standard Deviation = 2.2 Number of Observations = 43 Blind Sample ID = 75188-25DIW Mean = 25.51 % Relative Standard Deviation = 2.5 Number of Observations = 19 Blind Sample ID = 75188-25190 Mean = 11.07 % Relative Standard Deviation = 2.7 Number of Observations = 22 Blind Sample ID = 75186-25DIW Mean = 15.57 % Relative Standard Deviation = 6.0 Number of Observations = 43 Blind Sample ID = 75184-25DIW Mean = 22.84 % Relative Standard Deviation = 1.7 Number of Observations = 24 Blind Sample ID = 75184-25188 Mean = 7.74 % Relative Standard Deviation = 1.7 Number of Observations = 24 Blind Sample ID = 75182-25DIW Mean = 28.25 % Relative Standard Deviation = 1.3 Number of Observations = 48 Blind Sample ID = 75180-25DIW Mean = 132.71 % Relative Standard Deviation = 0.8 Number of Observations = 24 Blind Sample ID = 75178-25DIW Mean = 13.55 % Relative Standard Deviation = 3.2 Number of Observations = 47 Blind Sample ID = 75176-25DIW Mean = 5.78 % Relative Standard Deviation = 1.9 Number of Observations = 23 Blind Sample ID = 75174-25DIW Mean = 8.92 % Relative Standard Deviation = 3.2 Number of Observations = 46 Blind Sample ID = 75172-25DIW Mean = 13.84 % Relative Standard Deviation = 2.9 Number of Observations = 21 Blind Sample ID = 75172-25176 Mean = 6.17 % Relative Standard Deviation = 4.5 Number of Observations = 22 Blind Sample ID = 75170-25DIW Mean = 42.00 % Relative Standard Deviation = 1.4 Number of Observations = 24 Blind Sample ID = 75166-25DIW Mean = 9.50 % Relative Standard Deviation = 2.3 Number of Observations = 35 Blind Sample ID = 75162-25DIW Mean = 13.08 % Relative Standard Deviation = 3.8 Number of Observations = 49 Blind Sample ID = 50DIW-50138 Mean = 74.81 % Relative Standard Deviation = 1.4 Number of Observations = 52 Blind Sample ID = 50DIW-50136 Mean = 28.21 % Relative Standard Deviation = 2.2 Number of Observations = 30 Blind Sample ID = 50DIW-50130 Mean = 12.15 % Relative Standard Deviation = 2.9 Number of Observations = 47 Blind Sample ID = 50168-50DIW Mean = 16.23 % Relative Standard Deviation = 1.2 Number of Observations = 23 Blind Sample ID = 50168-50170 Mean = 17.80 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 50168-50164 Mean = 5.28 % Relative Standard Deviation = 7.0 Number of Observations = 48 Blind Sample ID = 50164-50DIW Mean = 33.68 % Relative Standard Deviation = 1.9 Number of Observations = 24 Blind Sample ID = 50164-50166 Mean = 11.95 % Relative Standard Deviation = 4.1 Number of Observations = 39 Blind Sample ID = 50162-50164 Mean = 42.36 % Relative Standard Deviation = 2.9 Number of Observations = 46 Blind Sample ID = 50162-50160 Mean = 42.53 % Relative Standard Deviation = 1.6 Number of Observations = 36 Blind Sample ID = 50160-50162 Mean = 88.04 % Relative Standard Deviation = 1.4 Number of Observations = 59 Blind Sample ID = 50160-50158 Mean = 52.16 % Relative Standard Deviation = 1.2 Number of Observations = 44 Blind Sample ID = 50158-50DIW Mean = 20.97 % Relative Standard Deviation = 2.0 Number of Observations = 42 Blind Sample ID = 50156-50DIW Mean = 81.50 % Relative Standard Deviation = 1.0 Number of Observations = 44 Blind Sample ID = 50154-50DIW Mean = 1.77 % Relative Standard Deviation = 4.5 Number of Observations = 40 Blind Sample ID = 50152-50DIW Mean = 218.60 % Relative Standard Deviation = 1.1 Number of Observations = 34 Blind Sample ID = 50142-50144 Mean = 178.80 % Relative Standard Deviation = 1.0 Number of Observations = 18 Blind Sample ID = 50140-50144 Mean = 87.36 % Relative Standard Deviation = 2.4 Number of Observations = 48 Blind Sample ID = 50138-50140 Mean = 88.92 % Relative Standard Deviation = 2.1 Number of Observations = 30 Blind Sample ID = 50136-50138 Mean = 112.63 % Relative Standard Deviation = 2.0 Number of Observations = 18 Blind Sample ID = 50134-50140 Mean = 113.72 % Relative Standard Deviation = 3.2 Number of Observations = 68 Blind Sample ID = 50134-50136 Mean = 68.57 % Relative Standard Deviation = 0.8 Number of Observations = 18 Blind Sample ID = 50132-50134 Mean = 105.39 % Relative Standard Deviation = 3.6 Number of Observations = 30 Blind Sample ID = 50130-50136 Mean = 58.77 % Relative Standard Deviation = 1.4 Number of Observations = 24 Blind Sample ID = 50130-50132 Mean = 40.26 % Relative Standard Deviation = 2.1 Number of Observations = 16 Blind Sample ID = 50004-50DIW Mean = 32.35 % Relative Standard Deviation = 3.0 Number of Observations = 32 Blind Sample ID = 45160-55DIW Mean = 31.81 % Relative Standard Deviation = 2.0 Number of Observations = 36 Blind Sample ID = 25DIW-75156 Mean = 3.72 % Relative Standard Deviation = 4.5 Number of Observations = 41 Blind Sample ID = 25DIW-75150 Mean = 155.84 % Relative Standard Deviation = 1.1 Number of Observations = 59 Blind Sample ID = 25DIW-75144 Mean = 171.30 % Relative Standard Deviation = 1.4 Number of Observations = 24 Blind Sample ID = 25DIW-75142 Mean = 19.85 % Relative Standard Deviation = 3.3 Number of Observations = 27 Blind Sample ID = 25DIW-75138 Mean = 112.60 % Relative Standard Deviation = 2.4 Number of Observations = 52 Blind Sample ID = 25DIW-75136 Mean = 11.73 % Relative Standard Deviation = 1.9 Number of Observations = 18 Blind Sample ID = 25188-75192 Mean = 27.19 % Relative Standard Deviation = 1.7 Number of Observations = 24 Blind Sample ID = 25186-75188 Mean = 16.91 % Relative Standard Deviation = 5.2 Number of Observations = 23 Blind Sample ID = 25184-75186 Mean = 12.80 % Relative Standard Deviation = 1.6 Number of Observations = 24 Blind Sample ID = 25184-75182 Mean = 31.07 % Relative Standard Deviation = 1.1 Number of Observations = 24 Blind Sample ID = 25182-75180 Mean = 24.87 % Relative Standard Deviation = 1.7 Number of Observations = 22 Blind Sample ID = 25180-75184 Mean = 142.63 % Relative Standard Deviation = 0.7 Number of Observations = 24 Blind Sample ID = 25180-75178 Mean = 23.66 % Relative Standard Deviation = 1.3 Number of Observations = 23 Blind Sample ID = 25180-75176 Mean = 56.08 % Relative Standard Deviation = 0.9 Number of Observations = 23 Blind Sample ID = 25178-75176 Mean = 15.32 % Relative Standard Deviation = 1.3 Number of Observations = 22 Blind Sample ID = 25174-75176 Mean = 8.71 % Relative Standard Deviation = 3.0 Number of Observations = 22 Blind Sample ID = 25172-75174 Mean = 8.93 % Relative Standard Deviation = 3.0 Number of Observations = 22 Blind Sample ID = 25172-75170 Mean = 21.57 % Relative Standard Deviation = 1.3 Number of Observations = 24 Blind Sample ID = 25172-75168 Mean = 48.43 % Relative Standard Deviation = 1.5 Number of Observations = 25 Blind Sample ID = 25168-75166 Mean = 56.91 % Relative Standard Deviation = 1.6 Number of Observations = 24 Blind Sample ID = 25164-75160 Mean = 81.35 % Relative Standard Deviation = 1.0 Number of Observations = 44 Blind Sample ID = 25162-75158 Mean = 17.42 % Relative Standard Deviation = 2.0 Number of Observations = 44 Blind Sample ID = 25160-75DIW Mean = 71.69 % Relative Standard Deviation = 1.2 Number of Observations = 36 Blind Sample ID = 25156-75004 Mean = 101.71 % Relative Standard Deviation = 1.6 Number of Observations = 19 Blind Sample ID = 25154-75004 Mean = 4.72 % Relative Standard Deviation = 4.9 Number of Observations = 40 Blind Sample ID = 25152-75150 Mean = 62.77 % Relative Standard Deviation = 1.7 Number of Observations = 64 Blind Sample ID = 25150-75004 Mean = 173.28 % Relative Standard Deviation = 0.8 Number of Observations = 18 Blind Sample ID = 25146-75144 Mean = 188.91 % Relative Standard Deviation = 0.9 Number of Observations = 33 Blind Sample ID = 25146-75142 Mean = 37.42 % Relative Standard Deviation = 2.5 Number of Observations = 16 Blind Sample ID = 25146-75138 Mean = 103.70 % Relative Standard Deviation = 0.9 Number of Observations = 26 Blind Sample ID = 25144-75146 Mean = 224.53 % Relative Standard Deviation = 1.4 Number of Observations = 28 Blind Sample ID = 25144-75142 Mean = 57.36 % Relative Standard Deviation = 1.9 Number of Observations = 32 Blind Sample ID = 25140-75138 Mean = 117.43 % Relative Standard Deviation = 1.4 Number of Observations = 25 Blind Sample ID = 25138-75140 Mean = 131.29 % Relative Standard Deviation = 1.4 Number of Observations = 28 Blind Sample ID = 25134-75136 Mean = 57.79 % Relative Standard Deviation = 1.7 Number of Observations = 16 Blind Sample ID = 25132-75130 Mean = 142.74 % Relative Standard Deviation = 0.7 Number of Observations = 60 Blind Sample ID = 25004-75154 Mean = 21.46 % Relative Standard Deviation = 2.3 Number of Observations = 39 Blind Sample ID = 25004-75152
The SGPlot Procedure


- Sulfate, FIL, IC, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00945, MCode: IC024
Dates: 10/23/96 through 09/22/11
Open Data Set

Mean = 1.97 % Relative Standard Deviation = 3.1 Number of Observations = 13 Blind Sample ID = P51 Mean = 0.83 % Relative Standard Deviation = 5.8 Number of Observations = 32 Blind Sample ID = P50 Mean = 0.60 % Relative Standard Deviation = 8.1 Number of Observations = 31 Blind Sample ID = P49 Mean = 0.26 % Relative Standard Deviation = 6.1 Number of Observations = 30 Blind Sample ID = P48 Mean = 0.18 % Relative Standard Deviation = 6.7 Number of Observations = 14 Blind Sample ID = P47 Mean = 0.49 % Relative Standard Deviation = 3.4 Number of Observations = 26 Blind Sample ID = P46 Mean = 0.24 % Relative Standard Deviation = 5.6 Number of Observations = 31 Blind Sample ID = P45 Mean = 1.17 % Relative Standard Deviation = 2.7 Number of Observations = 28 Blind Sample ID = P44 Mean = 0.43 % Relative Standard Deviation = 2.3 Number of Observations = 30 Blind Sample ID = P43 Mean = 0.25 % Relative Standard Deviation = 2.4 Number of Observations = 32 Blind Sample ID = P42 Mean = 0.26 % Relative Standard Deviation = 2.9 Number of Observations = 24 Blind Sample ID = P41 Mean = 3.06 % Relative Standard Deviation = 2.0 Number of Observations = 16 Blind Sample ID = P38 Mean = 1.47 % Relative Standard Deviation = 1.6 Number of Observations = 16 Blind Sample ID = P37 Mean = 0.61 % Relative Standard Deviation = 2.0 Number of Observations = 38 Blind Sample ID = P36 Mean = 0.64 % Relative Standard Deviation = 0.8 Number of Observations = 4 Blind Sample ID = P35 Mean = 0.39 % Relative Standard Deviation = 6.6 Number of Observations = 4 Blind Sample ID = P34 Mean = 1.42 % Relative Standard Deviation = 3.8 Number of Observations = 11 Blind Sample ID = P33 Mean = 1.86 % Relative Standard Deviation = 1.2 Number of Observations = 7 Blind Sample ID = P32 Mean = 3.65 % Relative Standard Deviation = 1.5 Number of Observations = 10 Blind Sample ID = P31 Mean = 0.40 % Relative Standard Deviation = 5.3 Number of Observations = 3 Blind Sample ID = P30 Mean = 1.15 % Relative Standard Deviation = 1.4 Number of Observations = 8 Blind Sample ID = P29 Mean = 6.57 % Relative Standard Deviation = 1.2 Number of Observations = 4 Blind Sample ID = P28 Mean = 2.59 % Relative Standard Deviation = 1.8 Number of Observations = 4 Blind Sample ID = P27 Mean = 2.57 % Relative Standard Deviation = 9.8 Number of Observations = 4 Blind Sample ID = P25 Mean = 0.31 % Relative Standard Deviation = 12.0 Number of Observations = 12 Blind Sample ID = P24 Mean = 1.30 % Relative Standard Deviation = 3.8 Number of Observations = 8 Blind Sample ID = P23 Mean = 0.38 % Relative Standard Deviation = 7.6 Number of Observations = 8 Blind Sample ID = P21
The SGPlot Procedure