- ANC as CaCO3, water, unfltd, fixed EP (pH 4.5) titr, lab -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 90410, MCode: TT040
Dates: 10/23/18 through 10/22/24
Open Data Set

Mean = 59.42 % Relative Standard Deviation = 2.4 Number of Observations = 5 Blind Sample ID = M244 Mean = 41.02 % Relative Standard Deviation = 1.2 Number of Observations = 5 Blind Sample ID = M242 Mean = 27.56 % Relative Standard Deviation = 3.0 Number of Observations = 8 Blind Sample ID = M240 Mean = 60.04 % Relative Standard Deviation = 1.4 Number of Observations = 7 Blind Sample ID = M238 Mean = 17.59 % Relative Standard Deviation = 3.5 Number of Observations = 10 Blind Sample ID = M236 Mean = 35.64 % Relative Standard Deviation = 2.8 Number of Observations = 9 Blind Sample ID = M234 Mean = 14.63 % Relative Standard Deviation = 3.8 Number of Observations = 9 Blind Sample ID = M232 Mean = 52.19 % Relative Standard Deviation = 1.4 Number of Observations = 9 Blind Sample ID = M230 Mean = 35.52 % Relative Standard Deviation = 1.8 Number of Observations = 10 Blind Sample ID = M228 Mean = 50.47 % Relative Standard Deviation = 2.1 Number of Observations = 10 Blind Sample ID = M226 Mean = 23.76 % Relative Standard Deviation = 2.9 Number of Observations = 11 Blind Sample ID = M224 Mean = 58.41 % Relative Standard Deviation = 2.3 Number of Observations = 11 Blind Sample ID = M222 Mean = 53.43 % Relative Standard Deviation = 2.4 Number of Observations = 7 Blind Sample ID = M220 Mean = 29.98 % Relative Standard Deviation = 1.3 Number of Observations = 7 Blind Sample ID = M218 Mean = 41.42 % Relative Standard Deviation = 0.2 Number of Observations = 4 Blind Sample ID = M214
The SGPlot Procedure


- Alkalinity as CaCO3, water, fltd, fixed EP (pH 4.5) titr, lab -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 29801, MCode: TT040
Dates: 10/19/18 through 10/16/24
Open Data Set

Mean = 59.14 % Relative Standard Deviation = 2.0 Number of Observations = 7 Blind Sample ID = M244 Mean = 41.27 % Relative Standard Deviation = 1.2 Number of Observations = 9 Blind Sample ID = M242 Mean = 27.87 % Relative Standard Deviation = 2.9 Number of Observations = 12 Blind Sample ID = M240 Mean = 60.59 % Relative Standard Deviation = 3.1 Number of Observations = 15 Blind Sample ID = M238 Mean = 17.94 % Relative Standard Deviation = 3.3 Number of Observations = 14 Blind Sample ID = M236 Mean = 36.57 % Relative Standard Deviation = 3.6 Number of Observations = 19 Blind Sample ID = M234 Mean = 14.94 % Relative Standard Deviation = 5.9 Number of Observations = 13 Blind Sample ID = M232 Mean = 52.80 % Relative Standard Deviation = 1.4 Number of Observations = 19 Blind Sample ID = M230 Mean = 35.16 % Relative Standard Deviation = 1.7 Number of Observations = 14 Blind Sample ID = M228 Mean = 50.71 % Relative Standard Deviation = 1.7 Number of Observations = 20 Blind Sample ID = M226 Mean = 23.91 % Relative Standard Deviation = 1.6 Number of Observations = 18 Blind Sample ID = M224 Mean = 58.89 % Relative Standard Deviation = 1.1 Number of Observations = 23 Blind Sample ID = M222 Mean = 53.62 % Relative Standard Deviation = 2.4 Number of Observations = 11 Blind Sample ID = M220 Mean = 30.29 % Relative Standard Deviation = 1.9 Number of Observations = 15 Blind Sample ID = M218 Mean = 30.75 % Relative Standard Deviation = 0.6 Number of Observations = 4 Blind Sample ID = M216 Mean = 41.79 % Relative Standard Deviation = 1.9 Number of Observations = 8 Blind Sample ID = M214
The SGPlot Procedure


- Bromide, fltd, IC -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 71870, MCode: IC027
Dates: 11/20/18 through 11/06/24
Open Data Set

Mean = 0.51 % Relative Standard Deviation = 10.7 Number of Observations = 9 Blind Sample ID = M242 Mean = 0.26 % Relative Standard Deviation = 3.3 Number of Observations = 10 Blind Sample ID = M240 Mean = 0.61 % Relative Standard Deviation = 6.7 Number of Observations = 15 Blind Sample ID = M238 Mean = 0.16 % Relative Standard Deviation = 7.3 Number of Observations = 17 Blind Sample ID = M236 Mean = 0.11 % Relative Standard Deviation = 8.3 Number of Observations = 24 Blind Sample ID = M234 Mean = 0.40 % Relative Standard Deviation = 5.1 Number of Observations = 17 Blind Sample ID = M232 Mean = 0.03 % Relative Standard Deviation = 19.2 Number of Observations = 24 Blind Sample ID = M230 Mean = 0.17 % Relative Standard Deviation = 20.3 Number of Observations = 18 Blind Sample ID = M228 Mean = 0.04 % Relative Standard Deviation = 19.8 Number of Observations = 24 Blind Sample ID = M226 Mean = 0.25 % Relative Standard Deviation = 5.0 Number of Observations = 17 Blind Sample ID = M224 Mean = 0.08 % Relative Standard Deviation = 8.4 Number of Observations = 23 Blind Sample ID = M222 Mean = 0.22 % Relative Standard Deviation = 5.2 Number of Observations = 11 Blind Sample ID = M220 Mean = 0.17 % Relative Standard Deviation = 8.0 Number of Observations = 15 Blind Sample ID = M218 Mean = 0.27 % Relative Standard Deviation = 0.6 Number of Observations = 4 Blind Sample ID = M216 Mean = 0.14 % Relative Standard Deviation = 4.1 Number of Observations = 8 Blind Sample ID = M214 Mean = 0.29 % Relative Standard Deviation = 60.1 Number of Observations = 15 Blind Sample ID =
The SGPlot Procedure


- Calcium, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00915, MCode: PLA11
Dates: 10/29/18 through 11/07/24
Open Data Set

Mean = 12.25 % Relative Standard Deviation = 1.7 Number of Observations = 15 Blind Sample ID = T251 Mean = 87.03 % Relative Standard Deviation = 1.7 Number of Observations = 13 Blind Sample ID = T249 Mean = 78.81 % Relative Standard Deviation = 2.1 Number of Observations = 31 Blind Sample ID = T247 Mean = 19.35 % Relative Standard Deviation = 1.1 Number of Observations = 28 Blind Sample ID = T245 Mean = 66.75 % Relative Standard Deviation = 2.0 Number of Observations = 42 Blind Sample ID = T243 Mean = 19.39 % Relative Standard Deviation = 1.5 Number of Observations = 48 Blind Sample ID = T241 Mean = 111.80 % Relative Standard Deviation = 2.0 Number of Observations = 48 Blind Sample ID = T239 Mean = 31.77 % Relative Standard Deviation = 1.6 Number of Observations = 42 Blind Sample ID = T237 Mean = 17.16 % Relative Standard Deviation = 1.7 Number of Observations = 46 Blind Sample ID = T235 Mean = 17.55 % Relative Standard Deviation = 2.2 Number of Observations = 39 Blind Sample ID = T233 Mean = 29.59 % Relative Standard Deviation = 1.7 Number of Observations = 41 Blind Sample ID = T231 Mean = 45.68 % Relative Standard Deviation = 2.0 Number of Observations = 43 Blind Sample ID = T229 Mean = 10.66 % Relative Standard Deviation = 2.2 Number of Observations = 28 Blind Sample ID = T227 Mean = 117.69 % Relative Standard Deviation = 1.9 Number of Observations = 26 Blind Sample ID = T225 Mean = 3.64 % Relative Standard Deviation = 2.0 Number of Observations = 15 Blind Sample ID = T223 Mean = 17.65 % Relative Standard Deviation = 2.3 Number of Observations = 13 Blind Sample ID = T221 Mean = 0.23 % Relative Standard Deviation = 1.7 Number of Observations = 7 Blind Sample ID = P75 Mean = 1.01 % Relative Standard Deviation = 1.3 Number of Observations = 16 Blind Sample ID = P74 Mean = 0.26 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = P73 Mean = 0.35 % Relative Standard Deviation = 1.9 Number of Observations = 16 Blind Sample ID = P72 Mean = 0.40 % Relative Standard Deviation = 2.2 Number of Observations = 16 Blind Sample ID = P71 Mean = 0.84 % Relative Standard Deviation = 2.0 Number of Observations = 8 Blind Sample ID = P70 Mean = 0.22 % Relative Standard Deviation = 2.6 Number of Observations = 16 Blind Sample ID = P69 Mean = 0.92 % Relative Standard Deviation = 1.4 Number of Observations = 8 Blind Sample ID = P68 Mean = 0.29 % Relative Standard Deviation = 2.4 Number of Observations = 16 Blind Sample ID = P67 Mean = 0.97 % Relative Standard Deviation = 2.0 Number of Observations = 7 Blind Sample ID = P66 Mean = 0.31 % Relative Standard Deviation = 0.5 Number of Observations = 5 Blind Sample ID = P65
The SGPlot Procedure


- Calcium, unfltd, ICP-OES, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00916, MCode: PLO07
Dates: 10/24/18 through 10/04/24
Open Data Set

Mean = 12.22 % Relative Standard Deviation = 2.4 Number of Observations = 7 Blind Sample ID = T251 Mean = 87.84 % Relative Standard Deviation = 2.5 Number of Observations = 5 Blind Sample ID = T249 Mean = 77.45 % Relative Standard Deviation = 2.3 Number of Observations = 16 Blind Sample ID = T247 Mean = 19.10 % Relative Standard Deviation = 2.9 Number of Observations = 12 Blind Sample ID = T245 Mean = 66.41 % Relative Standard Deviation = 2.4 Number of Observations = 18 Blind Sample ID = T243 Mean = 19.34 % Relative Standard Deviation = 1.8 Number of Observations = 24 Blind Sample ID = T241 Mean = 111.24 % Relative Standard Deviation = 4.1 Number of Observations = 24 Blind Sample ID = T239 Mean = 31.77 % Relative Standard Deviation = 2.7 Number of Observations = 18 Blind Sample ID = T237 Mean = 16.72 % Relative Standard Deviation = 2.8 Number of Observations = 22 Blind Sample ID = T235 Mean = 17.44 % Relative Standard Deviation = 3.0 Number of Observations = 18 Blind Sample ID = T233 Mean = 29.69 % Relative Standard Deviation = 1.8 Number of Observations = 18 Blind Sample ID = T231 Mean = 45.28 % Relative Standard Deviation = 2.3 Number of Observations = 21 Blind Sample ID = T229 Mean = 10.73 % Relative Standard Deviation = 1.4 Number of Observations = 16 Blind Sample ID = T227 Mean = 117.35 % Relative Standard Deviation = 2.4 Number of Observations = 12 Blind Sample ID = T225 Mean = 3.68 % Relative Standard Deviation = 1.0 Number of Observations = 7 Blind Sample ID = T223 Mean = 17.41 % Relative Standard Deviation = 1.1 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Chloride, fltd, IC -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00940, MCode: IC022
Dates: 10/19/18 through 10/31/24
Open Data Set

Mean = 2.27 % Relative Standard Deviation = 7.7 Number of Observations = 7 Blind Sample ID = P75 Mean = 1.99 % Relative Standard Deviation = 4.1 Number of Observations = 16 Blind Sample ID = P74 Mean = 2.99 % Relative Standard Deviation = 4.5 Number of Observations = 24 Blind Sample ID = P73 Mean = 3.34 % Relative Standard Deviation = 3.0 Number of Observations = 16 Blind Sample ID = P72 Mean = 2.95 % Relative Standard Deviation = 2.4 Number of Observations = 16 Blind Sample ID = P71 Mean = 6.90 % Relative Standard Deviation = 2.9 Number of Observations = 8 Blind Sample ID = P70 Mean = 2.59 % Relative Standard Deviation = 3.0 Number of Observations = 16 Blind Sample ID = P69 Mean = 2.23 % Relative Standard Deviation = 1.3 Number of Observations = 8 Blind Sample ID = P68 Mean = 2.59 % Relative Standard Deviation = 3.8 Number of Observations = 16 Blind Sample ID = P67 Mean = 8.70 % Relative Standard Deviation = 0.9 Number of Observations = 7 Blind Sample ID = P66 Mean = 2.02 % Relative Standard Deviation = 2.3 Number of Observations = 5 Blind Sample ID = P65 Mean = 186.13 % Relative Standard Deviation = 1.1 Number of Observations = 7 Blind Sample ID = M244 Mean = 41.69 % Relative Standard Deviation = 1.8 Number of Observations = 9 Blind Sample ID = M242 Mean = 28.97 % Relative Standard Deviation = 1.3 Number of Observations = 12 Blind Sample ID = M240 Mean = 88.60 % Relative Standard Deviation = 0.9 Number of Observations = 15 Blind Sample ID = M238 Mean = 84.42 % Relative Standard Deviation = 1.7 Number of Observations = 18 Blind Sample ID = M236 Mean = 35.01 % Relative Standard Deviation = 1.0 Number of Observations = 23 Blind Sample ID = M234 Mean = 69.55 % Relative Standard Deviation = 1.2 Number of Observations = 17 Blind Sample ID = M232 Mean = 36.30 % Relative Standard Deviation = 0.9 Number of Observations = 24 Blind Sample ID = M230 Mean = 9.51 % Relative Standard Deviation = 1.6 Number of Observations = 18 Blind Sample ID = M228 Mean = 26.25 % Relative Standard Deviation = 1.0 Number of Observations = 24 Blind Sample ID = M226 Mean = 10.13 % Relative Standard Deviation = 1.0 Number of Observations = 18 Blind Sample ID = M224 Mean = 7.50 % Relative Standard Deviation = 1.1 Number of Observations = 23 Blind Sample ID = M222 Mean = 15.97 % Relative Standard Deviation = 0.6 Number of Observations = 11 Blind Sample ID = M220 Mean = 67.90 % Relative Standard Deviation = 1.4 Number of Observations = 14 Blind Sample ID = M218 Mean = 20.00 % Relative Standard Deviation = 0.8 Number of Observations = 4 Blind Sample ID = M216 Mean = 29.19 % Relative Standard Deviation = 1.2 Number of Observations = 8 Blind Sample ID = M214
The SGPlot Procedure


- Dissolved Inorganic Carbon (DIC), fltd, NDIR -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00691, MCode: IR006
Dates: 03/12/19 through 09/17/19
Open Data Set

Mean = 11.99 % Relative Standard Deviation = 52.2 Number of Observations = 14 Blind Sample ID =
The SGPlot Procedure


- Dissolved solids, water, fltd, dried at 180 deg C -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 70300, MCode: ROE10
Dates: 10/23/18 through 10/17/24
Open Data Set

Mean = 517.20 % Relative Standard Deviation = 6.9 Number of Observations = 7 Blind Sample ID = M244 Mean = 138.63 % Relative Standard Deviation = 4.1 Number of Observations = 9 Blind Sample ID = M242 Mean = 132.04 % Relative Standard Deviation = 5.4 Number of Observations = 12 Blind Sample ID = M240 Mean = 273.22 % Relative Standard Deviation = 7.3 Number of Observations = 15 Blind Sample ID = M238 Mean = 351.97 % Relative Standard Deviation = 7.8 Number of Observations = 18 Blind Sample ID = M236 Mean = 122.53 % Relative Standard Deviation = 4.1 Number of Observations = 24 Blind Sample ID = M234 Mean = 267.56 % Relative Standard Deviation = 6.4 Number of Observations = 18 Blind Sample ID = M232 Mean = 146.60 % Relative Standard Deviation = 3.4 Number of Observations = 23 Blind Sample ID = M230 Mean = 98.17 % Relative Standard Deviation = 3.4 Number of Observations = 17 Blind Sample ID = M228 Mean = 123.73 % Relative Standard Deviation = 8.2 Number of Observations = 24 Blind Sample ID = M226 Mean = 63.51 % Relative Standard Deviation = 8.6 Number of Observations = 18 Blind Sample ID = M224 Mean = 89.87 % Relative Standard Deviation = 8.2 Number of Observations = 23 Blind Sample ID = M222 Mean = 126.02 % Relative Standard Deviation = 6.8 Number of Observations = 11 Blind Sample ID = M220 Mean = 478.91 % Relative Standard Deviation = 5.6 Number of Observations = 14 Blind Sample ID = M218 Mean = 97.52 % Relative Standard Deviation = 7.7 Number of Observations = 4 Blind Sample ID = M216 Mean = 217.76 % Relative Standard Deviation = 4.4 Number of Observations = 8 Blind Sample ID = M214
The SGPlot Procedure


- Fluoride, fltd, IC -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00950, MCode: IC003
Dates: 10/19/18 through 10/31/24
Open Data Set

Mean = 0.07 % Relative Standard Deviation = 17.2 Number of Observations = 7 Blind Sample ID = P75 Mean = 0.09 % Relative Standard Deviation = 6.8 Number of Observations = 15 Blind Sample ID = P74 Mean = 0.06 % Relative Standard Deviation = 11.7 Number of Observations = 24 Blind Sample ID = P73 Mean = 0.11 % Relative Standard Deviation = 7.8 Number of Observations = 16 Blind Sample ID = P72 Mean = 0.05 % Relative Standard Deviation = 16.0 Number of Observations = 16 Blind Sample ID = P71 Mean = 0.40 % Relative Standard Deviation = 9.9 Number of Observations = 5 Blind Sample ID = P70 Mean = 0.06 % Relative Standard Deviation = 13.0 Number of Observations = 16 Blind Sample ID = P69 Mean = 0.02 % Relative Standard Deviation = 5.8 Number of Observations = 8 Blind Sample ID = P68 Mean = 0.06 % Relative Standard Deviation = 6.1 Number of Observations = 15 Blind Sample ID = P67 Mean = 0.20 % Relative Standard Deviation = 6.6 Number of Observations = 7 Blind Sample ID = P66 Mean = 0.05 % Relative Standard Deviation = 12.3 Number of Observations = 5 Blind Sample ID = P65 Mean = 0.39 % Relative Standard Deviation = 4.3 Number of Observations = 7 Blind Sample ID = M244 Mean = 0.33 % Relative Standard Deviation = 5.2 Number of Observations = 9 Blind Sample ID = M242 Mean = 0.32 % Relative Standard Deviation = 3.8 Number of Observations = 12 Blind Sample ID = M240 Mean = 0.29 % Relative Standard Deviation = 7.6 Number of Observations = 15 Blind Sample ID = M238 Mean = 2.39 % Relative Standard Deviation = 4.1 Number of Observations = 18 Blind Sample ID = M236 Mean = 1.12 % Relative Standard Deviation = 4.2 Number of Observations = 23 Blind Sample ID = M234 Mean = 0.22 % Relative Standard Deviation = 6.9 Number of Observations = 18 Blind Sample ID = M232 Mean = 0.32 % Relative Standard Deviation = 4.4 Number of Observations = 24 Blind Sample ID = M230 Mean = 0.71 % Relative Standard Deviation = 2.4 Number of Observations = 18 Blind Sample ID = M228 Mean = 0.26 % Relative Standard Deviation = 3.9 Number of Observations = 24 Blind Sample ID = M226 Mean = 0.75 % Relative Standard Deviation = 2.7 Number of Observations = 18 Blind Sample ID = M224 Mean = 0.38 % Relative Standard Deviation = 3.9 Number of Observations = 23 Blind Sample ID = M222 Mean = 0.66 % Relative Standard Deviation = 3.9 Number of Observations = 11 Blind Sample ID = M220 Mean = 0.36 % Relative Standard Deviation = 5.7 Number of Observations = 14 Blind Sample ID = M218 Mean = 0.25 % Relative Standard Deviation = 4.6 Number of Observations = 4 Blind Sample ID = M216 Mean = 0.61 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = M214
The SGPlot Procedure


- Magnesium, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00925, MCode: PLA11
Dates: 10/29/18 through 11/07/24
Open Data Set

Mean = 3.07 % Relative Standard Deviation = 1.8 Number of Observations = 15 Blind Sample ID = T251 Mean = 20.96 % Relative Standard Deviation = 2.0 Number of Observations = 13 Blind Sample ID = T249 Mean = 18.72 % Relative Standard Deviation = 1.6 Number of Observations = 31 Blind Sample ID = T247 Mean = 6.71 % Relative Standard Deviation = 1.9 Number of Observations = 28 Blind Sample ID = T245 Mean = 34.30 % Relative Standard Deviation = 1.3 Number of Observations = 42 Blind Sample ID = T243 Mean = 6.78 % Relative Standard Deviation = 1.6 Number of Observations = 48 Blind Sample ID = T241 Mean = 29.51 % Relative Standard Deviation = 1.7 Number of Observations = 48 Blind Sample ID = T239 Mean = 7.58 % Relative Standard Deviation = 1.9 Number of Observations = 42 Blind Sample ID = T237 Mean = 4.22 % Relative Standard Deviation = 1.6 Number of Observations = 45 Blind Sample ID = T235 Mean = 6.77 % Relative Standard Deviation = 2.5 Number of Observations = 39 Blind Sample ID = T233 Mean = 14.30 % Relative Standard Deviation = 1.9 Number of Observations = 41 Blind Sample ID = T231 Mean = 23.32 % Relative Standard Deviation = 1.7 Number of Observations = 43 Blind Sample ID = T229 Mean = 3.26 % Relative Standard Deviation = 1.8 Number of Observations = 28 Blind Sample ID = T227 Mean = 15.42 % Relative Standard Deviation = 2.1 Number of Observations = 26 Blind Sample ID = T225 Mean = 4.10 % Relative Standard Deviation = 2.3 Number of Observations = 15 Blind Sample ID = T223 Mean = 3.76 % Relative Standard Deviation = 1.8 Number of Observations = 13 Blind Sample ID = T221 Mean = 0.19 % Relative Standard Deviation = 2.2 Number of Observations = 7 Blind Sample ID = P75 Mean = 0.09 % Relative Standard Deviation = 1.7 Number of Observations = 16 Blind Sample ID = P74 Mean = 0.17 % Relative Standard Deviation = 1.8 Number of Observations = 24 Blind Sample ID = P73 Mean = 0.10 % Relative Standard Deviation = 1.5 Number of Observations = 16 Blind Sample ID = P72 Mean = 0.20 % Relative Standard Deviation = 2.3 Number of Observations = 16 Blind Sample ID = P71 Mean = 0.36 % Relative Standard Deviation = 1.9 Number of Observations = 8 Blind Sample ID = P70 Mean = 0.07 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = P69 Mean = 0.11 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = P68 Mean = 0.08 % Relative Standard Deviation = 2.5 Number of Observations = 16 Blind Sample ID = P67 Mean = 0.70 % Relative Standard Deviation = 2.4 Number of Observations = 7 Blind Sample ID = P66 Mean = 0.09 % Relative Standard Deviation = 1.2 Number of Observations = 5 Blind Sample ID = P65
The SGPlot Procedure


- Magnesium, unfltd, ICP-OES, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00927, MCode: PLO07
Dates: 10/24/18 through 10/04/24
Open Data Set

Mean = 3.07 % Relative Standard Deviation = 1.0 Number of Observations = 7 Blind Sample ID = T251 Mean = 21.22 % Relative Standard Deviation = 3.3 Number of Observations = 5 Blind Sample ID = T249 Mean = 18.53 % Relative Standard Deviation = 2.0 Number of Observations = 16 Blind Sample ID = T247 Mean = 6.67 % Relative Standard Deviation = 3.0 Number of Observations = 12 Blind Sample ID = T245 Mean = 34.46 % Relative Standard Deviation = 2.2 Number of Observations = 18 Blind Sample ID = T243 Mean = 6.79 % Relative Standard Deviation = 2.2 Number of Observations = 24 Blind Sample ID = T241 Mean = 29.21 % Relative Standard Deviation = 3.2 Number of Observations = 24 Blind Sample ID = T239 Mean = 7.54 % Relative Standard Deviation = 2.8 Number of Observations = 18 Blind Sample ID = T237 Mean = 4.16 % Relative Standard Deviation = 2.3 Number of Observations = 22 Blind Sample ID = T235 Mean = 6.69 % Relative Standard Deviation = 3.5 Number of Observations = 18 Blind Sample ID = T233 Mean = 14.24 % Relative Standard Deviation = 1.7 Number of Observations = 18 Blind Sample ID = T231 Mean = 23.12 % Relative Standard Deviation = 2.0 Number of Observations = 21 Blind Sample ID = T229 Mean = 3.28 % Relative Standard Deviation = 1.3 Number of Observations = 16 Blind Sample ID = T227 Mean = 15.35 % Relative Standard Deviation = 1.6 Number of Observations = 12 Blind Sample ID = T225 Mean = 4.11 % Relative Standard Deviation = 2.2 Number of Observations = 7 Blind Sample ID = T223 Mean = 3.76 % Relative Standard Deviation = 1.0 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Potassium, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00935, MCode: PLO03
Dates: 10/29/18 through 11/07/24
Open Data Set

Mean = 1.71 % Relative Standard Deviation = 2.9 Number of Observations = 17 Blind Sample ID = T251 Mean = 5.29 % Relative Standard Deviation = 2.2 Number of Observations = 17 Blind Sample ID = T249 Mean = 6.16 % Relative Standard Deviation = 1.6 Number of Observations = 39 Blind Sample ID = T247 Mean = 1.20 % Relative Standard Deviation = 4.7 Number of Observations = 32 Blind Sample ID = T245 Mean = 9.47 % Relative Standard Deviation = 1.8 Number of Observations = 48 Blind Sample ID = T243 Mean = 1.16 % Relative Standard Deviation = 6.0 Number of Observations = 58 Blind Sample ID = T241 Mean = 8.80 % Relative Standard Deviation = 2.6 Number of Observations = 54 Blind Sample ID = T239 Mean = 2.34 % Relative Standard Deviation = 3.1 Number of Observations = 54 Blind Sample ID = T237 Mean = 1.46 % Relative Standard Deviation = 4.0 Number of Observations = 57 Blind Sample ID = T235 Mean = 1.57 % Relative Standard Deviation = 5.3 Number of Observations = 45 Blind Sample ID = T233 Mean = 1.38 % Relative Standard Deviation = 5.2 Number of Observations = 45 Blind Sample ID = T231 Mean = 4.47 % Relative Standard Deviation = 2.3 Number of Observations = 52 Blind Sample ID = T229 Mean = 0.47 % Relative Standard Deviation = 11.4 Number of Observations = 31 Blind Sample ID = T227 Mean = 2.54 % Relative Standard Deviation = 2.7 Number of Observations = 30 Blind Sample ID = T225 Mean = 1.01 % Relative Standard Deviation = 7.8 Number of Observations = 15 Blind Sample ID = T223 Mean = 1.84 % Relative Standard Deviation = 4.3 Number of Observations = 13 Blind Sample ID = T221 Mean = 2.68 % Relative Standard Deviation = 65.0 Number of Observations = 37 Blind Sample ID =
The SGPlot Procedure


- Potassium, fltd, ICP-OES, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00935, MCode: PLO02
Dates: 08/26/19 through 09/27/24
Open Data Set

Mean = 0.06 % Relative Standard Deviation = 1.8 Number of Observations = 7 Blind Sample ID = P75 Mean = 0.73 % Relative Standard Deviation = 1.3 Number of Observations = 16 Blind Sample ID = P74 Mean = 0.18 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = P73 Mean = 0.20 % Relative Standard Deviation = 1.5 Number of Observations = 16 Blind Sample ID = P72 Mean = 0.14 % Relative Standard Deviation = 1.8 Number of Observations = 16 Blind Sample ID = P71 Mean = 0.42 % Relative Standard Deviation = 2.2 Number of Observations = 8 Blind Sample ID = P70 Mean = 0.01 % Relative Standard Deviation = 8.8 Number of Observations = 16 Blind Sample ID = P69 Mean = 0.16 % Relative Standard Deviation = 1.9 Number of Observations = 8 Blind Sample ID = P68 Mean = 0.11 % Relative Standard Deviation = 2.3 Number of Observations = 10 Blind Sample ID = P67
The SGPlot Procedure


- Silica, fltd, DA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00955, MCode: CL151
Dates: 11/06/18 through 10/10/24
Open Data Set

Mean = 14.66 % Relative Standard Deviation = 1.4 Number of Observations = 5 Blind Sample ID = M244 Mean = 13.53 % Relative Standard Deviation = 2.8 Number of Observations = 5 Blind Sample ID = M242 Mean = 13.28 % Relative Standard Deviation = 1.8 Number of Observations = 7 Blind Sample ID = M240 Mean = 13.33 % Relative Standard Deviation = 3.5 Number of Observations = 7 Blind Sample ID = M238 Mean = 6.62 % Relative Standard Deviation = 3.1 Number of Observations = 12 Blind Sample ID = M236 Mean = 11.41 % Relative Standard Deviation = 2.5 Number of Observations = 12 Blind Sample ID = M234 Mean = 7.94 % Relative Standard Deviation = 2.3 Number of Observations = 12 Blind Sample ID = M232 Mean = 10.36 % Relative Standard Deviation = 3.3 Number of Observations = 12 Blind Sample ID = M230 Mean = 10.60 % Relative Standard Deviation = 3.2 Number of Observations = 12 Blind Sample ID = M226 Mean = 11.31 % Relative Standard Deviation = 2.0 Number of Observations = 12 Blind Sample ID = M224 Mean = 6.16 % Relative Standard Deviation = 2.6 Number of Observations = 11 Blind Sample ID = M222 Mean = 6.63 % Relative Standard Deviation = 1.3 Number of Observations = 7 Blind Sample ID = M220 Mean = 24.19 % Relative Standard Deviation = 2.1 Number of Observations = 7 Blind Sample ID = M218 Mean = 9.44 % Relative Standard Deviation = 3.8 Number of Observations = 4 Blind Sample ID = M214
The SGPlot Procedure


- Silica, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00955, MCode: PLA11
Dates: 10/29/18 through 11/07/24
Open Data Set

Mean = 8.13 % Relative Standard Deviation = 1.4 Number of Observations = 17 Blind Sample ID = T251 Mean = 14.74 % Relative Standard Deviation = 2.0 Number of Observations = 17 Blind Sample ID = T249 Mean = 23.58 % Relative Standard Deviation = 2.9 Number of Observations = 38 Blind Sample ID = T247 Mean = 5.73 % Relative Standard Deviation = 1.3 Number of Observations = 32 Blind Sample ID = T245 Mean = 7.16 % Relative Standard Deviation = 1.9 Number of Observations = 46 Blind Sample ID = T243 Mean = 6.64 % Relative Standard Deviation = 1.8 Number of Observations = 59 Blind Sample ID = T241 Mean = 7.46 % Relative Standard Deviation = 2.9 Number of Observations = 54 Blind Sample ID = T239 Mean = 8.46 % Relative Standard Deviation = 3.3 Number of Observations = 54 Blind Sample ID = T237 Mean = 14.34 % Relative Standard Deviation = 2.4 Number of Observations = 57 Blind Sample ID = T235 Mean = 11.96 % Relative Standard Deviation = 2.5 Number of Observations = 45 Blind Sample ID = T233 Mean = 5.44 % Relative Standard Deviation = 1.9 Number of Observations = 47 Blind Sample ID = T231 Mean = 14.93 % Relative Standard Deviation = 3.3 Number of Observations = 54 Blind Sample ID = T229 Mean = 4.83 % Relative Standard Deviation = 1.9 Number of Observations = 32 Blind Sample ID = T227 Mean = 15.47 % Relative Standard Deviation = 5.8 Number of Observations = 32 Blind Sample ID = T225 Mean = 7.81 % Relative Standard Deviation = 2.0 Number of Observations = 18 Blind Sample ID = T223 Mean = 12.83 % Relative Standard Deviation = 1.8 Number of Observations = 15 Blind Sample ID = T221 Mean = 10.51 % Relative Standard Deviation = 38.3 Number of Observations = 35 Blind Sample ID =
The SGPlot Procedure


- Silica, unfltd, ICP-OES, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00956, MCode: PLO07
Dates: 11/13/18 through 09/06/24
Open Data Set

Mean = 22.62 % Relative Standard Deviation = 1.5 Number of Observations = 4 Blind Sample ID = T247 Mean = 5.65 % Relative Standard Deviation = 1.9 Number of Observations = 6 Blind Sample ID = T245 Mean = 7.19 % Relative Standard Deviation = 1.8 Number of Observations = 9 Blind Sample ID = T243 Mean = 6.63 % Relative Standard Deviation = 2.1 Number of Observations = 10 Blind Sample ID = T241 Mean = 7.31 % Relative Standard Deviation = 2.4 Number of Observations = 12 Blind Sample ID = T239 Mean = 8.38 % Relative Standard Deviation = 1.2 Number of Observations = 12 Blind Sample ID = T237 Mean = 13.85 % Relative Standard Deviation = 3.5 Number of Observations = 12 Blind Sample ID = T235 Mean = 11.76 % Relative Standard Deviation = 1.8 Number of Observations = 12 Blind Sample ID = T233 Mean = 5.42 % Relative Standard Deviation = 1.9 Number of Observations = 12 Blind Sample ID = T231 Mean = 14.50 % Relative Standard Deviation = 2.4 Number of Observations = 10 Blind Sample ID = T229 Mean = 4.82 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = T227 Mean = 15.13 % Relative Standard Deviation = 5.5 Number of Observations = 8 Blind Sample ID = T225 Mean = 7.73 % Relative Standard Deviation = 1.2 Number of Observations = 3 Blind Sample ID = T223 Mean = 12.89 % Relative Standard Deviation = 3.6 Number of Observations = 3 Blind Sample ID = T221
The SGPlot Procedure


- Sodium, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00930, MCode: PLA11
Dates: 10/29/18 through 11/07/24
Open Data Set

Mean = 13.49 % Relative Standard Deviation = 1.9 Number of Observations = 15 Blind Sample ID = T251 Mean = 70.27 % Relative Standard Deviation = 2.7 Number of Observations = 13 Blind Sample ID = T249 Mean = 96.66 % Relative Standard Deviation = 1.9 Number of Observations = 31 Blind Sample ID = T247 Mean = 14.43 % Relative Standard Deviation = 1.3 Number of Observations = 28 Blind Sample ID = T245 Mean = 53.62 % Relative Standard Deviation = 1.8 Number of Observations = 42 Blind Sample ID = T243 Mean = 16.28 % Relative Standard Deviation = 1.6 Number of Observations = 48 Blind Sample ID = T241 Mean = 106.18 % Relative Standard Deviation = 1.8 Number of Observations = 48 Blind Sample ID = T239 Mean = 21.34 % Relative Standard Deviation = 1.9 Number of Observations = 42 Blind Sample ID = T237 Mean = 27.31 % Relative Standard Deviation = 1.9 Number of Observations = 46 Blind Sample ID = T235 Mean = 16.31 % Relative Standard Deviation = 2.1 Number of Observations = 39 Blind Sample ID = T233 Mean = 34.68 % Relative Standard Deviation = 1.6 Number of Observations = 41 Blind Sample ID = T231 Mean = 25.49 % Relative Standard Deviation = 2.1 Number of Observations = 43 Blind Sample ID = T229 Mean = 6.35 % Relative Standard Deviation = 2.0 Number of Observations = 28 Blind Sample ID = T227 Mean = 115.02 % Relative Standard Deviation = 1.8 Number of Observations = 26 Blind Sample ID = T225 Mean = 7.73 % Relative Standard Deviation = 2.3 Number of Observations = 15 Blind Sample ID = T223 Mean = 17.70 % Relative Standard Deviation = 2.4 Number of Observations = 13 Blind Sample ID = T221 Mean = 1.28 % Relative Standard Deviation = 2.9 Number of Observations = 16 Blind Sample ID = P74 Mean = 0.76 % Relative Standard Deviation = 3.3 Number of Observations = 24 Blind Sample ID = P73 Mean = 2.13 % Relative Standard Deviation = 1.8 Number of Observations = 16 Blind Sample ID = P72 Mean = 1.37 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = P70 Mean = 0.41 % Relative Standard Deviation = 2.1 Number of Observations = 6 Blind Sample ID = P68 Mean = 2.63 % Relative Standard Deviation = 3.0 Number of Observations = 7 Blind Sample ID = P66
The SGPlot Procedure


- Sodium, unfltd, ICP-OES, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00929, MCode: PLO07
Dates: 11/13/18 through 10/04/24
Open Data Set

Mean = 13.98 % Relative Standard Deviation = 0.9 Number of Observations = 4 Blind Sample ID = T251 Mean = 70.44 % Relative Standard Deviation = 0.4 Number of Observations = 3 Blind Sample ID = T249 Mean = 97.10 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = T247 Mean = 14.32 % Relative Standard Deviation = 2.6 Number of Observations = 8 Blind Sample ID = T245 Mean = 53.78 % Relative Standard Deviation = 2.4 Number of Observations = 11 Blind Sample ID = T243 Mean = 16.38 % Relative Standard Deviation = 2.3 Number of Observations = 12 Blind Sample ID = T241 Mean = 105.81 % Relative Standard Deviation = 2.1 Number of Observations = 12 Blind Sample ID = T239 Mean = 21.32 % Relative Standard Deviation = 2.5 Number of Observations = 12 Blind Sample ID = T237 Mean = 26.60 % Relative Standard Deviation = 2.6 Number of Observations = 12 Blind Sample ID = T235 Mean = 16.31 % Relative Standard Deviation = 1.3 Number of Observations = 12 Blind Sample ID = T233 Mean = 34.78 % Relative Standard Deviation = 1.6 Number of Observations = 12 Blind Sample ID = T231 Mean = 25.54 % Relative Standard Deviation = 1.8 Number of Observations = 10 Blind Sample ID = T229 Mean = 6.43 % Relative Standard Deviation = 1.1 Number of Observations = 8 Blind Sample ID = T227 Mean = 113.59 % Relative Standard Deviation = 1.0 Number of Observations = 8 Blind Sample ID = T225 Mean = 7.93 % Relative Standard Deviation = 1.4 Number of Observations = 3 Blind Sample ID = T223 Mean = 17.76 % Relative Standard Deviation = 0.5 Number of Observations = 3 Blind Sample ID = T221
The SGPlot Procedure


- Specific Cond, LAB, UNF -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 90095, MCode: WHT03
Dates: 10/17/18 through 10/17/24
Open Data Set

Mean = 17.90 % Relative Standard Deviation = 1.7 Number of Observations = 7 Blind Sample ID = P75 Mean = 18.25 % Relative Standard Deviation = 1.6 Number of Observations = 16 Blind Sample ID = P74 Mean = 21.08 % Relative Standard Deviation = 2.8 Number of Observations = 24 Blind Sample ID = P73 Mean = 34.78 % Relative Standard Deviation = 1.0 Number of Observations = 16 Blind Sample ID = P72 Mean = 21.78 % Relative Standard Deviation = 11.9 Number of Observations = 16 Blind Sample ID = P71 Mean = 49.87 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = P70 Mean = 48.72 % Relative Standard Deviation = 6.8 Number of Observations = 15 Blind Sample ID = P69 Mean = 27.01 % Relative Standard Deviation = 0.8 Number of Observations = 8 Blind Sample ID = P68 Mean = 24.53 % Relative Standard Deviation = 5.5 Number of Observations = 16 Blind Sample ID = P67 Mean = 47.72 % Relative Standard Deviation = 1.1 Number of Observations = 7 Blind Sample ID = P66 Mean = 17.76 % Relative Standard Deviation = 0.8 Number of Observations = 5 Blind Sample ID = P65 Mean = 878.55 % Relative Standard Deviation = 0.9 Number of Observations = 7 Blind Sample ID = M244 Mean = 249.20 % Relative Standard Deviation = 1.2 Number of Observations = 9 Blind Sample ID = M242 Mean = 227.74 % Relative Standard Deviation = 0.6 Number of Observations = 12 Blind Sample ID = M240 Mean = 455.19 % Relative Standard Deviation = 0.8 Number of Observations = 15 Blind Sample ID = M238 Mean = 542.59 % Relative Standard Deviation = 0.4 Number of Observations = 18 Blind Sample ID = M236 Mean = 218.94 % Relative Standard Deviation = 0.8 Number of Observations = 24 Blind Sample ID = M234 Mean = 432.34 % Relative Standard Deviation = 0.6 Number of Observations = 18 Blind Sample ID = M232 Mean = 261.05 % Relative Standard Deviation = 2.3 Number of Observations = 24 Blind Sample ID = M230 Mean = 170.81 % Relative Standard Deviation = 0.4 Number of Observations = 18 Blind Sample ID = M228 Mean = 221.05 % Relative Standard Deviation = 0.6 Number of Observations = 24 Blind Sample ID = M226 Mean = 99.80 % Relative Standard Deviation = 1.4 Number of Observations = 18 Blind Sample ID = M224 Mean = 160.76 % Relative Standard Deviation = 0.6 Number of Observations = 23 Blind Sample ID = M222 Mean = 213.32 % Relative Standard Deviation = 0.5 Number of Observations = 11 Blind Sample ID = M220 Mean = 714.31 % Relative Standard Deviation = 0.4 Number of Observations = 15 Blind Sample ID = M218 Mean = 152.25 % Relative Standard Deviation = 0.7 Number of Observations = 4 Blind Sample ID = M216 Mean = 363.20 % Relative Standard Deviation = 1.8 Number of Observations = 8 Blind Sample ID = M214 Mean = 102.71 % Relative Standard Deviation = 53.0 Number of Observations = 4 Blind Sample ID =
The SGPlot Procedure


- Sulfate, fltd, IC -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00945, MCode: IC022
Dates: 10/19/18 through 10/31/24
Open Data Set

Mean = 0.24 % Relative Standard Deviation = 7.2 Number of Observations = 7 Blind Sample ID = P75 Mean = 0.56 % Relative Standard Deviation = 2.0 Number of Observations = 16 Blind Sample ID = P74 Mean = 0.23 % Relative Standard Deviation = 4.4 Number of Observations = 24 Blind Sample ID = P73 Mean = 0.45 % Relative Standard Deviation = 4.6 Number of Observations = 16 Blind Sample ID = P72 Mean = 0.17 % Relative Standard Deviation = 5.6 Number of Observations = 16 Blind Sample ID = P71 Mean = 0.59 % Relative Standard Deviation = 5.2 Number of Observations = 8 Blind Sample ID = P70 Mean = 0.24 % Relative Standard Deviation = 5.3 Number of Observations = 16 Blind Sample ID = P69 Mean = 0.44 % Relative Standard Deviation = 1.4 Number of Observations = 8 Blind Sample ID = P68 Mean = 0.20 % Relative Standard Deviation = 8.4 Number of Observations = 16 Blind Sample ID = P67 Mean = 0.87 % Relative Standard Deviation = 1.5 Number of Observations = 7 Blind Sample ID = P66 Mean = 0.23 % Relative Standard Deviation = 6.9 Number of Observations = 5 Blind Sample ID = P65 Mean = 76.96 % Relative Standard Deviation = 1.9 Number of Observations = 7 Blind Sample ID = M244 Mean = 8.31 % Relative Standard Deviation = 2.7 Number of Observations = 9 Blind Sample ID = M242 Mean = 28.21 % Relative Standard Deviation = 1.5 Number of Observations = 12 Blind Sample ID = M240 Mean = 14.01 % Relative Standard Deviation = 4.9 Number of Observations = 15 Blind Sample ID = M238 Mean = 98.84 % Relative Standard Deviation = 1.9 Number of Observations = 18 Blind Sample ID = M236 Mean = 8.39 % Relative Standard Deviation = 3.0 Number of Observations = 23 Blind Sample ID = M234 Mean = 73.33 % Relative Standard Deviation = 1.5 Number of Observations = 18 Blind Sample ID = M232 Mean = 10.90 % Relative Standard Deviation = 1.8 Number of Observations = 24 Blind Sample ID = M230 Mean = 26.46 % Relative Standard Deviation = 1.9 Number of Observations = 18 Blind Sample ID = M228 Mean = 13.92 % Relative Standard Deviation = 1.1 Number of Observations = 24 Blind Sample ID = M226 Mean = 5.42 % Relative Standard Deviation = 1.4 Number of Observations = 18 Blind Sample ID = M224 Mean = 9.56 % Relative Standard Deviation = 1.1 Number of Observations = 23 Blind Sample ID = M222 Mean = 21.68 % Relative Standard Deviation = 1.0 Number of Observations = 11 Blind Sample ID = M220 Mean = 211.32 % Relative Standard Deviation = 1.4 Number of Observations = 14 Blind Sample ID = M218 Mean = 8.32 % Relative Standard Deviation = 0.8 Number of Observations = 4 Blind Sample ID = M216 Mean = 79.62 % Relative Standard Deviation = 1.1 Number of Observations = 8 Blind Sample ID = M214
The SGPlot Procedure


- Total Organic Carbon (TOC), UNF, HTCO -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00680, MCode: COMB9
Dates: 03/07/19 through 09/11/19
Open Data Set

Mean = 11.33 % Relative Standard Deviation = 55.7 Number of Observations = 14 Blind Sample ID =
The SGPlot Procedure


- Total solids, water, unfltd, dried at 105 deg C -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00500, MCode: ROE12
Dates: 10/16/18 through 10/11/24
Open Data Set

Mean = 541.55 % Relative Standard Deviation = 5.7 Number of Observations = 4 Blind Sample ID = M244 Mean = 147.62 % Relative Standard Deviation = 8.6 Number of Observations = 4 Blind Sample ID = M242 Mean = 134.94 % Relative Standard Deviation = 6.3 Number of Observations = 4 Blind Sample ID = M240 Mean = 279.25 % Relative Standard Deviation = 10.3 Number of Observations = 8 Blind Sample ID = M238 Mean = 375.31 % Relative Standard Deviation = 7.0 Number of Observations = 6 Blind Sample ID = M236 Mean = 138.76 % Relative Standard Deviation = 8.3 Number of Observations = 6 Blind Sample ID = M234 Mean = 269.09 % Relative Standard Deviation = 4.0 Number of Observations = 12 Blind Sample ID = M232 Mean = 149.78 % Relative Standard Deviation = 3.4 Number of Observations = 12 Blind Sample ID = M230 Mean = 106.05 % Relative Standard Deviation = 6.0 Number of Observations = 6 Blind Sample ID = M228 Mean = 129.95 % Relative Standard Deviation = 3.1 Number of Observations = 12 Blind Sample ID = M226 Mean = 63.76 % Relative Standard Deviation = 11.1 Number of Observations = 6 Blind Sample ID = M224 Mean = 90.82 % Relative Standard Deviation = 6.6 Number of Observations = 5 Blind Sample ID = M222 Mean = 125.69 % Relative Standard Deviation = 5.7 Number of Observations = 8 Blind Sample ID = M220 Mean = 487.06 % Relative Standard Deviation = 2.3 Number of Observations = 8 Blind Sample ID = M218 Mean = 226.95 % Relative Standard Deviation = 1.9 Number of Observations = 4 Blind Sample ID = M214
The SGPlot Procedure