Table 6.Results of Wilcoxon signed-rank test for bias in constituent data for the National Water Quality Laboratory

[Most probable value, Median bias, and Nearest reporting unit reported in same units as Minimum Reporting Limit; mg/L, milligrams per liter; DIS, dissolved; COL, colorimetric; --, acceptable results; LIS, low ionic strength; NEG, negative bias; ASF, micro-Kjeldahl digestion, automated segmented flow, colorimetric; USEPA, U.S. Environmental Protection Agency; WWR, whole-water recoverable; POS, positive bias; TITR, electrometric titration; mg/L, micrograms per liter; ICP-AES, inductively coupled plasma-atomic emission spectrometry; ICP-MS, inductively coupled plasma-mass spectrometry; DCP-AES, direct current plasma-atomic emission spectrometry; HG-AAS, hydride generation-atomic absorption spectrophotometry; F-AAS, flame-atomic absorption spectrophotometry; GF-AAS, graphite furnace-atomic absorption spectrophotometry; IC, ion chromatography; GRAV, gravimetric; ISE, ion-selective electrode; CV-AAS, cold vapor-atomic absorption spectrophotometry; ELEC, electrometric; mS/cm, microsiemens per centimeter]

Constituent and method of analysis

Most probable value

Number of determinations

Median bias

Nearest reporting unit

p-value

Bias

NUTRIENT CONSTITUENTS

Ammonia as nitrogen (DIS, COL) Minimum Reporting Limit 0.015 mg/L

0.062

18

-0.002

0.01

0.01405

--

0.155

45

-0.005

0.01

0.10688

--

0.266

44

0.004

0.01

0.03729

--

Ammonia as nitrogen (DIS, COL, LIS) Minimum Reporting Limit 0.002 mg/L

0.155

12

-0.016

0.001

0.03418

NEG

0.266

12

0.011

0.001

0.19580

--

Ammonia plus organic nitrogen as nitrogen (DIS, ASF) Minimum Reporting Limit 0.2 mg/L

0.132

10

0.07

0.1

0.00195

--

0.250

30

-0.05

0.1

0.72160

--

0.474

29

-0.04

0.1

0.00536

--

2.37

30

0.03

0.1

0.80977

--

Ammonia plus organic nitrogen as nitrogen (DIS, USEPA) Minimum Reporting Limit 0.2 mg/L

0.132

3

0.07

0.1

0.25000

--

0.250

6

0.06

0.1

0.06250

--

0.474

6

0.06

0.1

0.15625

--

2.37

6

0.24

0.1

0.15625

--

Ammonia plus organic nitrogen as nitrogen (WWR, ASF) Minimum Reporting Limit 0.2 mg/L

0.132

18

0.07

0.1

0.00001

--

0.250

30

-0.05

0.1

0.00036

--

0.474

30

-0.01

0.1

0.13829

--

0.480

2

-0.08

0.1

0.50000

--

2.37

29

0.07

0.1

0.02098

--

Ammonia plus organic nitrogen as nitrogen (WWR, USEPA) Minimum Reporting Limit 0.2 mg/L

0.132

3

0.07

0.1

0.25000

--

0.250

6

0.05

0.1

0.15625

--

0.484

6

0.01

0.1

0.06250

--

2.37

6

0.27

0.1

0.03125

POS

Nitrate plus nitrite as nitrogen (DIS, COL) Minimum Reporting Limit 0.05 mg/L

0.073

28

0.007

0.01

0.00059

--

0.182

60

-0.012

0.01

0.00000

NEG

0.344

58

-0.006

0.01

0.02538

--

1.72

59

0.02

0.1

0.33067

--

Nitrate plus nitrite as nitrogen (DIS, COL, LIS) Minimum Reporting Limit 0.005 mg/L

0.182

12

-0.037

0.01

0.03125

NEG

0.344

12

-0.011

0.01

0.15137

--

Nitrate plus nitrite as nitrogen (DIS, USEPA) Minimum Reporting Limit 0.05 mg/L

0.073

3

-0.012

0.01

0.75000

--

0.182

6

-0.052

0.01

0.03125

NEG

0.344

6

-0.042

0.01

0.03125

NEG

1.72

6

-0.09

0.1

0.03125

--

Orthophosphate as phosphorus (DIS, COL) Minimum Reporting Limit 0.01 mg/L

0.061

18

-0.001

0.01

0.31766

--

0.152

46

0.008

0.01

0.00030

--

0.232

44

0.007

0.01

0.00752

--

Orthophosphate as phosphorus (DIS, COL, LIS) Minimum Reporting Limit 0.001 mg/L

0.152

12

0.013

0.01

0.00098

POS

0.232

12

0.007

0.01

0.55762

--

Phosphorus (DIS, ASF) Minimum Reporting Limit 0.01 mg/L

0.050

10

0.000

0.01

0.12500

--

0.167

30

-0.007

0.01

0.00699

--

Phosphorus (DIS, USEPA) Minimum Reporting Limit 0.01 mg/L

0.050

3

0.000

0.01

1.00000

--

0.167

6

-0.027

0.01

0.12500

--

0.794

1

0.026

0.01

1.00000

--

Phosphorus (WWR, ASF) Minimum Reporting Limit 0.01 mg/L

0.050

18

0.000

0.01

0.81543

--

0.167

30

-0.017

0.01

0.00009

NEG

0.223

2

-0.018

0.01

0.50000

--

Phosphorus (WWR, USEPA) Minimum Reporting Limit 0.01 mg/L

0.050

3

0.000

0.01

1.00000

--

0.167

6

-0.017

0.01

0.56250

--

0.764

1

0.026

0.01

1.00000

--

INORGANIC CONSTITUENTS

Alkalinity (WWR,TITR) Minimum Reporting Limit 1 mg/L

15.0

22

0.7

1

0.00002

--

30.0

30

-0.1

1

0.00400

--

68.5

16

-2.5

1

0.00003

NEG

76.0

25

2.1

1

0.00000

POS

77.0

24

-2.0

1

0.00000

NEG

78.5

18

1.6

1

0.00001

POS

106

30

-1.0

1

0.00000

--

107

34

1.7

1

0.00000

POS

114

26

2.0

1

0.00000

POS

130

14

2.3

1

0.00012

POS

Aluminum (DIS, ICP-AES) Minimum Reporting Limit 5 mg/L

5.60

22

1.49

0.1

0.00011

POS

16.5

23

2.32

0.1

0.00000

POS

48.9

26

4.00

0.1

0.00000

POS

Aluminum (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

5.25

16

0.8

1

0.00003

--

5.60

16

1.4

1

0.00003

POS

20.5

16

-1.5

1

0.00003

NEG

Aluminum (WWR, DCP-AES) Minimum Reporting Limit 10 mg/L

15.5

7

-6

10

0.89063

--

16.5

8

2

10

0.81250

--

20.5

8

-1

10

0.07031

--

35.7

8

0

10

0.71094

--

48.9

8

6

10

0.14844

--

53.0

7

-3

10

0.81250

--

Antimony (DIS, HG-AAS) Minimum Reporting Limit 1 mg/L

6.45

8

1.7

1

0.03906

POS

42.9

8

0.2

1

0.84375

--

61.1

7

-12.1

1

0.15625

--

Antimony (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

2.35

16

0.4

1

0.00687

--

38.2

16

3.4

1

0.00031

POS

45.9

16

4.1

1

0.00003

POS

Arsenic (DIS, HG-AAS) Minimum Reporting Limit 1 mg/L

1.39

22

0.6

1

0.00000

--

2.78

5

0.2

1

0.12500

--

5.00

8

2.8

1

0.00781

POS

6.53

52

0.5

1

0.00025

--

7.50

8

1.3

1

0.06250

--

7.65

21

2.4

1

0.00000

POS

7.78

47

2.2

1

0.00000

POS

Arsenic (WWR, GF-AAS, USEPA) Minimum Reporting Limit 1 mg/L

2.78

6

-0.1

1

0.68750

--

5.00

8

0.0

1

1.00000

--

7.50

8

0.5

1

0.09375

--

Arsenic (WWR, HG-AAS) Minimum Reporting Limit 1 mg/L

2.78

5

0.5

1

0.06250

--

4.05

7

1.0

1

0.23438

--

5.00

8

3.2

1

0.00781

POS

5.30

8

3.5

1

0.00781

POS

6.04

8

1.0

1

0.17188

--

7.50

8

4.4

1

0.00781

POS

Barium (DIS, ICP-AES) Minimum Reporting Limit 2 mg/L

22.0

5

0.0

1

0.87500

--

33.9

8

-1.2

1

0.00781

NEG

41.3

34

0.8

1

0.00000

--

49.0

27

1.0

1

0.00000

--

50.9

8

-1.2

1

0.23438

--

66.4

34

-0.6

1

0.00143

--

Barium (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

11.0

16

0.0

1

0.07813

--

33.9

16

-0.6

1

0.02930

--

66.4

16

-1.2

1

0.00488

NEG

Barium (WWR, F-AAS) Minimum Reporting Limit 100 mg/L

22.0

5

78

100

0.06250

--

33.9

8

66

100

0.00781

--

50.9

8

49

100

0.00781

--

Beryllium (DIS, ICP-AES) Minimum Reporting Limit 0.5 mg/L

5.05

5

-0.15

0.1

0.62500

--

6.90

27

0.10

0.1

0.12010

--

9.73

34

0.09

0.1

0.00513

--

29.5

8

-0.2

1

0.86719

--

32.1

34

0.9

1

0.00076

--

44.3

8

0.8

1

0.10156

--

Beryllium (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

2.53

16

0.4

1

0.00797

--

29.5

16

0.5

1

0.01025

--

32.1

16

0.9

1

0.00323

--

Beryllium (WWR, F-AAS) Minimum Reporting Limit 10 mg/L

6.90

7

3

10

0.01563

--

9.73

8

0

10

0.00781

--

32.1

8

-3

10

0.00781

--

Boron (DIS, ICP-AES) Minimum Reporting Limit 4 mg/L

4.44

30

-0.44

0.1

0.29151

--

9.00

21

-0.31

0.1

0.89009

--

14.3

3

-4.14

0.1

0.25000

--

24.6

23

-0.85

0.1

0.05103

--

32.1

13

-2.23

0.1

0.03979

NEG

32.5

26

-1.40

0.1

0.00564

NEG

100

25

1.0

1

0.14853

--

104

30

1.6

1

0.10276

--

117

34

1.8

1

0.00843

POS

158

8

4.3

1

0.03906

POS

Cadmium (DIS, GF-AAS) Minimum Reporting Limit 1 mg/L

1.88

22

0.2

1

0.00000

--

3.75

5

0.3

1

0.12500

--

7.85

26

0.2

1

0.00000

--

25.3

8

0.3

1

0.92969

--

29.0

23

1.0

1

0.01494

--

37.9

8

1.1

1

0.00781

POS

Cadmium (DIS, ICP-AES) Minimum Reporting Limit 1 mg/L

7.50

27

-0.5

1

0.07435

--

7.68

34

-0.6

1

0.05490

--

28.7

34

-0.2

1

0.31592

--

Cadmium (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

1.88

16

0.1

1

0.00006

--

25.3

16

0.5

1

0.11237

--

28.7

16

-0.3

1

0.08875

--

Cadmium (WWR, GF-AAS) Minimum Reporting Limit 1 mg/L

3.75

5

0.1

1

0.18750

--

7.50

7

0.5

1

0.09375

--

7.68

8

0.2

1

0.18750

--

7.85

18

0.2

1

0.26131

--

25.3

8

-0.1

1

0.67188

--

28.7

8

-1.2

1

0.03125

NEG

29.0

16

0.0

1

0.59314

--

37.9

8

-0.4

1

0.29688

--

39.6

14

-0.5

1

0.12939

--

Calcium (DIS, ICP-AES) Minimum Reporting Limit 0.02 mg/L

5.30

22

-0.06

0.1

0.23136

--

12.6

10

0.2

1

0.54688

--

24.3

34

-0.3

1

0.79444

--

25.4

16

-0.4

1

0.65894

--

28.6

27

0.4

1

0.15883

--

29.6

24

-0.6

1

0.00028

--

30.4

4

0.7

1

0.25000

--

34.7

10

1.3

1

0.00195

POS

40.9

18

-0.9

1

0.01344

--

42.5

34

1.1

1

0.00000

POS

47.1

26

-1.1

1

0.00187

NEG

58.1

14

-1.6

1

0.00818

NEG

Chloride (DIS, IC) Minimum Reporting Limit 0.1 mg/L

5.35

22

0.16

0.1

0.00003

POS

10.7

30

0.3

1

0.00000

--

30.0

16

1.0

1

0.00385

--

38.6

24

0.5

1

0.00305

--

46.0

25

0.5

1

0.01781

--

56.7

30

1.3

1

0.00002

POS

60.4

18

1.1

1

0.00095

POS

69.0

26

1.0

1

0.07068

--

78.5

34

0.5

1

0.00908

--

85.3

14

0.2

1

0.84204

--

Chloride (DIS, IC, LIS) Minimum Reporting Limit 0.01 mg/L

0.310

8

-0.130

0.01

0.00781

NEG

1.20

7

0.00

0.1

0.25000

--

3.90

7

-0.05

0.1

0.25000

--

Chromium (DIS, GF-AAS) Minimum Reporting Limit 1 mg/L

1.94

16

0.06

0.1

0.42178

--

3.88

5

0.13

0.1

1.00000

--

11.6

33

0.4

1

0.23003

--

39.5

8

-0.5

1

0.89063

--

43.4

20

-0.7

1

0.77702

--

59.3

8

-0.7

1

0.46875

--

64.1

14

-1.2

1

0.07434

--

Chromium (DIS, ICP-AES) Minimum Reporting Limit 5 mg/L

9.66

34

1.2

1

0.00091

POS

17.4

27

0.6

1

0.10848

--

49.2

34

1.7

1

0.02560

POS

Chromium (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

1.94

16

0.1

1

0.66760

--

39.5

16

-0.5

1

0.04257

--

49.2

16

-1.2

1

0.00192

NEG

Chromium (WWR, GF-AAS) Minimum Reporting Limit 1 mg/L

3.88

5

-0.38

0.1

0.12500

--

9.66

8

-0.16

0.1

0.24219

--

17.4

7

0.6

1

0.87500

--

39.5

8

-0.3

1

0.78125

--

49.2

8

-0.4

1

0.46094

--

59.3

8

-2.2

1

0.29688

--

Cobalt (DIS, GF-AAS) Minimum Reporting Limit 1 mg/L

3.35

5

0.3

1

0.06250

--

20.0

8

1.0

1

0.00781

--

30.0

8

1.8

1

0.01563

POS

Cobalt (DIS, ICP-AES) Minimum Reporting Limit 3 mg/L

3.45

27

0.2

1

0.05711

--

6.65

34

-0.2

1

0.09917

--

20.2

34

-0.2

1

0.55135

--

Cobalt (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

1.68

16

0.3

1

0.00021

--

20.0

16

0.0

1

0.03125

--

20.2

16

0.2

1

0.36505

--

Cobalt (WWR, GF-AAS) Minimum Reporting Limit 1 mg/L

3.45

7

0.6

1

0.04688

--

6.65

8

0.4

1

0.14844

--

20.2

8

-0.2

1

0.94531

--

Copper (DIS, GF-AAS) Minimum Reporting Limit 1 mg/L

3.25

22

-0.3

1

0.78458

--

6.50

5

0.1

1

0.50000

--

15.5

26

0.3

1

0.83179

--

31.0

8

0.0

1

1.00000

--

37.5

23

0.7

1

0.01833

--

46.5

8

2.5

1

0.03906

POS

Copper (DIS, ICP-AES) Minimum Reporting Limit 10 mg/L

9.95

27

0

10

0.00000

--

14.3

34

-2

10

0.15167

--

32.0

34

-2

10

0.00726

--

Copper (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

3.25

16

0.0

1

0.26859

--

31.0

16

0.4

1

0.12964

--

32.0

16

0.1

1

0.02200

--

Copper (WWR, GF-AAS) Minimum Reporting Limit 1 mg/L

6.50

5

-0.2

1

0.87500

--

9.95

7

-0.2

1

0.20313

--

14.3

8

-0.3

1

0.25000

--

15.5

18

-0.5

1

0.24992

--

31.0

8

0.1

1

0.84375

--

32.0

8

-0.3

1

0.71094

--

37.5

16

0.5

1

0.42667

--

46.5

8

-1.0

1

0.59375

--

47.0

14

-1.2

1

0.05859

--

Dissolved Solids (DIS, GRAV) Minimum Reporting Limit 1 mg/L

50.0

22

2.0

1

0.21649

--

100

30

2.0

1

0.03993

POS

219

16

0.3

1

0.24741

--

239

24

1.0

1

0.50342

--

284

25

3.0

1

0.04675

POS

324

18

1.5

1

0.03295

POS

384

30

4.0

1

0.00810

POS

426

26

2.5

1

0.03769

POS

469

34

2.5

1

0.50690

--

519

14

6.0

1

0.22449

--

Fluoride (DIS, IC, LIS) Minimum Reporting Limit 0.01 mg/L

0.030

8

0.010

0.01

0.46875

--

0.110

7

-0.010

0.01

0.06250

--

0.120

8

-0.010

0.01

0.15625

--

Fluoride (DIS, ISE) Minimum Reporting Limit 0.1 mg/L

0.310

22

0.00

0.1

0.07456

--

0.520

43

0.04

0.1

0.00000

--

0.620

30

0.06

0.1

0.00010

--

0.780

26

0.03

0.1

0.00000

--

0.800

34

0.03

0.1

0.00000

--

0.860

24

0.04

0.1

0.00124

--

0.920

14

0.06

0.1

0.01208

--

1.04

16

0.06

0.1

0.00015

--

1.14

30

0.07

0.1

0.00041

--

Iron (DIS, ICP-AES) Minimum Reporting Limit 3 mg/L

1.88

36

1.1

1

0.00000

POS

3.75

5

-0.6

1

0.37500

--

5.90

42

-2.9

1

0.00000

NEG

6.70

34

-1.7

1

0.00002

NEG

37.7

27

-1.7

1

0.00011

NEG

114

8

-1

10

0.52344

--

118

41

0

10

0.05703

--

150

34

1

10

0.99326

--

171

8

-7

10

0.01563

--

Iron (WWR, F-AAS) Minimum Reporting Limit 10 mg/L

3.75

5

6

10

0.06250

--

5.90

18

4

10

0.00001

--

6.70

8

3

10

0.00781

--

37.7

7

2

10

0.89063

--

114

8

4

10

0.35938

--

118

16

-4

10

0.01663

--

150

8

-2

10

0.63281

--

171

8

1

10

1.00000

--

189

14

-8

10

0.01184

--

Lead (DIS, GF-AAS) Minimum Reporting Limit 1 mg/L

1.12

22

-0.0

1

0.91180

--

2.24

5

0.2

1

0.31250

--

5.09

26

-0.1

1

0.49047

--

51.5

8

1.4

1

0.03125

POS

53.7

23

2.1

1

0.00651

POS

77.3

8

3.1

1

0.00781

POS

Lead (DIS, ICP-AES) Minimum Reporting Limit 10 mg/L

4.78

34

5

10

0.00000

--

6.00

27

4

10

0.00000

--

54.7

34

3

10

0.29940

--

Lead (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

1.12

16

-0.1

1

0.09460

--

51.5

16

-0.4

1

0.09219

--

54.7

16

-0.7

1

0.39615

--

Lead (WWR, GF-AAS) Minimum Reporting Limit 1 mg/L

2.24

5

0.2

1

1.00000

--

4.78

8

0.2

1

0.00781

--

5.09

18

0.1

1

0.17686

--

6.00

7

0.0

1

0.31250

--

51.5

8

1.3

1

0.14063

--

53.7

16

1.3

1

0.34015

--

54.7

8

0.4

1

0.81250

--

77.3

8

0.3

1

0.51563

--

78.8

14

-0.5

1

0.57263

--

Lithium (DIS, ICP-AES) Minimum Reporting Limit 4 mg/L

9.4

5

1.0

1

0.12500

--

15.1

27

-0.1

1

0.25537

--

19.4

34

-0.4

1

0.88670

--

36.9

8

-1.8

1

0.02344

NEG

41.2

34

-0.6

1

0.02317

--

55.3

8

-2.6

1

0.02344

NEG

Magnesium (DIS, ICP-AES) Minimum Reporting Limit 0.01 mg/L

1.48

22

-0.01

0.1

0.13340

--

2.50

14

0.00

0.1

0.84375

--

6.00

18

0.00

0.1

0.84833

--

6.05

34

-0.05

0.1

0.00000

--

6.55

3

0.01

0.1

1.00000

--

7.20

24

-0.13

0.1

0.00014

NEG

7.74

16

0.04

0.1

0.48706

--

7.79

27

-0.13

0.1

0.00194

NEG

8.87

34

-0.17

0.1

0.00000

NEG

9.12

13

-0.32

0.1

0.00024

NEG

11.5

26

-0.5

1

0.00000

--

13.9

8

-0.2

1

0.32813

--

Magnesium (DIS, ICP-AES, LIS) Minimum Reporting Limit 0.01 mg/L

0.060

3

-0.010

0.01

0.25000

--

0.320

3

-0.020

0.01

0.50000

--

Manganese (DIS, ICP-AES) Minimum Reporting Limit 1 mg/L

0.60

36

0.4

1

0.00000

--

1.20

5

0.1

1

0.62500

--

6.80

23

0.1

1

0.09367

--

11.2

28

0.3

1

0.43536

--

59.0

27

-1.4

1

0.00028

NEG

212

8

-4

10

0.00781

--

213

41

-3

10

0.02443

--

261

34

-4

10

0.00000

--

317

8

-8

10

0.01563

--

Manganese (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

0.60

16

0.4

1

0.00003

--

212

16

-4.8

1

0.01285

NEG

261

16

-6.3

1

0.00024

NEG

Manganese (WWR, F-AAS) Minimum Reporting Limit 10 mg/L

1.20

5

9

10

0.06250

--

6.80

8

3

10

0.00781

--

59.0

7

1

10

0.50000

--

212

8

-3

10

0.37500

--

261

8

-11

10

0.00781

NEG

317

8

-7

10

0.01563

--

Mercury (DIS, CV-AAS) Minimum Reporting Limit 0.1 mg/L

0.53

24

-0.01

0.1

0.94462

--

0.76

32

0.04

0.1

0.00527

--

0.93

8

-0.02

0.1

0.47656

--

2.27

28

-0.08

0.1

0.00194

--

Mercury (WWR, CV-AAS) Minimum Reporting Limit 0.1 mg/L

0.53

8

-0.02

0.1

0.74219

--

0.76

8

-0.10

0.1

0.14844

--

0.93

16

-0.03

0.1

0.29086

--

2.27

12

-0.30

0.1

0.00049

NEG

Molybdenum (DIS, ICP-AES) Minimum Reporting Limit 10 mg/L

5.50

27

5

10

0.00000

--

11.7

34

-2

10

0.22416

--

36.0

34

1

10

0.95323

--

Molybdenum (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

3.73

16

0.3

1

0.00031

--

31.5

16

0.5

1

0.03638

--

36.0

16

0.4

1

0.24774

--

Nickel (DIS, GF-AAS) Minimum Reporting Limit 1 mg/L

3.28

22

0.0

1

0.19104

--

6.55

5

0.5

1

0.06250

--

15.1

26

1.0

1

0.00000

--

32.8

8

-0.3

1

0.84375

--

39.4

23

1.5

1

0.07151

--

49.2

8

1.8

1

0.01563

POS

Nickel (DIS, ICP-AES) Minimum Reporting Limit 10 mg/L

14.1

34

5

10

0.00096

--

16.0

27

1

10

0.92530

--

40.3

34

0

10

0.72986

--

Nickel (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

3.28

16

0.0

1

0.18753

--

32.8

16

-0.8

1

0.10016

--

40.3

16

-0.3

1

0.03214

--

Nickel (WWR, GF-AAS) Minimum Reporting Limit 1 mg/L

6.55

5

0.3

1

0.18750

--

14.1

8

0.2

1

0.28125

--

16.0

7

0.2

1

0.12500

--

32.8

8

0.2

1

0.17969

--

40.3

8

0.1

1

0.78906

--

49.2

8

0.8

1

0.10156

--

Potassium (DIS, F-AAS) Minimum Reporting Limit 0.1 mg/L

0.75

22

-0.02

0.1

0.62309

--

1.50

30

0.00

0.1

0.37270

--

2.20

18

-0.10

0.1

0.00708

--

2.50

24

-0.05

0.1

0.10542

--

2.75

16

-0.05

0.1

0.45135

--

3.27

25

-0.04

0.1

0.24874

--

4.47

34

-0.03

0.1

0.48567

--

4.77

30

0.04

0.1

0.46791

--

4.90

26

-0.08

0.1

0.36222

--

5.50

14

-0.03

0.1

0.98413

--

Potassium (DIS, F-AAS, LIS) Minimum Reporting Limit 0.01 mg/L

0.090

8

0.000

0.01

0.45313

--

0.120

7

0.000

0.01

1.00000

--

0.480

8

0.020

0.01

0.10938

--

Selenium (DIS, HG-AAS) Minimum Reporting Limit 1 mg/L

1.21

22

-0.2

1

0.07137

--

2.42

5

-0.3

1

0.81250

--

5.00

8

0.0

1

0.31250

--

6.62

52

-0.6

1

0.00069

--

7.42

47

-0.4

1

0.01541

--

7.50

8

-0.7

1

0.12500

--

7.83

21

-0.8

1

0.03111

--

Selenium (WWR, GF-AAS, USEPA) Minimum Reporting Limit 1 mg/L

2.42

6

-0.2

1

0.03125

--

5.00

8

0.4

1

0.06250

--

7.50

8

0.5

1

0.08594

--

Selenium (WWR, HG-AAS) Minimum Reporting Limit 1 mg/L

2.42

5

-0.3

1

0.12500

--

4.85

7

-1.0

1

0.01563

--

5.00

8

-0.2

1

0.73438

--

5.65

8

-0.7

1

0.01563

--

5.72

8

0.3

1

0.71875

--

7.50

8

-1.1

1

0.03906

NEG

Silica (DIS, COL) Minimum Reporting Limit 0.1 mg/L

2.30

22

0.10

0.1

0.00000

--

3.90

18

0.02

0.1

0.79199

--

4.60

30

0.20

0.1

0.00002

POS

5.83

24

0.17

0.1

0.00112

POS

6.50

24

0.00

0.1

0.64710

--

7.52

16

0.25

0.1

0.00861

POS

9.17

34

-0.07

0.1

0.38649

--

9.75

26

-0.11

0.1

0.31840

--

11.1

14

-0.1

1

0.15698

--

111.1

30

-0.1

1

0.49029

--

Silica (DIS, ICP-AES) Minimum Reporting Limit 0.01 mg/L

2.14

16

-0.040

0.01

0.12375

--

2.33

30

-0.030

0.01

0.03684

NEG

4.95

14

-0.050

0.01

0.18286

--

5.62

49

-0.120

0.01

0.00000

NEG

6.80

34

0.010

0.01

0.26099

--

7.83

27

-0.030

0.01

0.02205

NEG

9.01

34

0.100

0.01

0.00107

POS

9.16

34

0.020

0.01

0.56812

--

Silver (DIS, GF-AAS) Minimum Reporting Limit 1 mg/L

1.13

5

-0.1

1

0.06250

--

4.09

18

-0.1

1

0.91795

--

4.91

8

0.1

1

1.00000

--

6.04

16

0.4

1

0.00949

--

7.36

8

0.1

1

0.54688

--

7.43

14

0.6

1

0.00012

--

Silver (DIS, ICP-AES) Minimum Reporting Limit 1 mg/L

3.11

27

-0.2

1

0.03366

--

3.17

34

-0.2

1

0.01887

--

5.06

34

-0.5

1

0.00061

--

Silver (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

0.57

16

0.4

1

0.00003

--

4.91

16

0.0

1

0.56003

--

5.06

16

-0.1

1

0.01596

--

Silver (WWR, GF-AAS) Minimum Reporting Limit 1 mg/L

1.13

5

-0.1

1

0.12500

--

3.11

7

-0.1

1

0.18750

--

3.17

8

-0.2

1

0.00781

--

4.91

8

0.0

1

0.25000

--

5.06

8

-0.1

1

0.00781

--

7.36

8

-0.3

1

0.44531

--

Sodium (DIS, ICP-AES) Minimum Reporting Limit 0.2 mg/L

8.95

22

-0.32

0.1

0.00292

NEG

22.7

10

0.2

1

0.74805

--

26.4

34

0.5

1

0.00730

--

27.5

27

0.5

1

0.00547

--

38.8

16

0.2

1

0.85422

--

41.9

24

-0.5

1

0.09167

--

54.3

18

-0.3

1

0.46141

--

60.9

4

0.2

1

0.62500

--

62.0

10

1.1

1

0.00195

POS

76.4

34

0.6

1

0.00002

--

81.0

26

-1.0

1

0.01106

--

96.2

14

-1.4

1

0.00854

NEG

Sodium (DIS, ICP-AES, LIS) Minimum Reporting Limit 0.2 mg/L

0.120

3

0.080

0.01

0.25000

--

0.500

3

0.000

0.01

0.00000

--

Specific conductance (WWR, ELEC, LIS) Minimum Reporting Limit 0.5 ms/cm

13.3

7

-1.75

0.1

0.68750

--

14.2

8

-0.30

0.1

0.12500

--

41.8

8

-0.65

0.1

0.19531

--

Strontium (DIS, ICP-AES) Minimum Reporting Limit 0.5 mg/L

23.0

8

0.6

1

0.06250

--

34.5

8

0.7

1

0.21094

--

138

34

2

10

0.00023

--

194

27

7

10

0.00008

--

201

5

4

10

0.18750

--

340

34

12

10

0.00000

POS

Sulfate (DIS, IC) Minimum Reporting Limit 0.1 mg/L

14.5

22

-0.5

1

0.00000

--

29.0

30

-1.0

1

0.00000

--

58.5

16

-0.5

1

0.01825

--

59.0

24

0.0

1

0.22217

--

69.0

18

-0.3

1

0.00244

--

75.0

25

0.0

1

0.61971

--

104

30

0

10

0.05415

--

113

26

-1

10

0.23135

--

114

34

0

10

0.85366

--

132

14

-2

10

0.18713

--

Sulfate (DIS, IC, LIS) Minimum Reporting Limit 0.01 mg/L

0.340

7

-0.030

0.01

0.01563

NEG

0.500

8

-0.120

0.01

0.00781

NEG

1.280

8

0.02

0.1

0.21094

--

Vanadium (DIS, COL) Minimum Reporting Limit 1 mg/L

2.78

13

-1.08

0.1

0.00024

NEG

6.06

8

-0.81

0.1

0.02344

NEG

Vanadium (DIS, ICP-AES) Minimum Reporting Limit 6 mg/L

6.11

34

-0.1

1

0.12366

--

11.7

27

-0.6

1

0.33371

--

33.4

34

-0.3

1

0.47490

--

Zinc (DIS, ICP-AES) Minimum Reporting Limit 3 mg/L

10.0

5

1.3

1

0.87500

--

30.0

8

0.1

1

0.97656

--

38.5

8

0.0

1

0.94531

--

48.9

34

2.3

1

0.03902

POS

62.8

34

0.7

1

0.13678

--

134

27

6

10

0.00000

--

Zinc (DIS, ICP-MS) Minimum Reporting Limit 1 mg/L

5.46

16

-0.1

1

0.76956

--

30.0

16

0.0

1

0.46924

--

48.9

16

-0.8

1

0.00253

--

Zinc (WWR, F-AAS) Minimum Reporting Limit 10 mg/L

10.0

5

0

10

0.50000

--

29.6

16

1

10

0.00003

--

30.0

8

0

10

0.75000

--

38.5

8

0

10

0.25000

--

48.5

14

1

10

0.59729

--

48.9

8

1

10

0.67969

--

62.8

8

-2

10

0.16406

--

115

18

-2

10

0.58686

--

134

7

3

10

0.34375

--

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