LIST OF FIGURES

1. Display of ordinary least-squares regression equation derived for sodium
2. Ammonia as nitrogen, dissolved, (colorimetric) data from the National Water Quality Laboratory
3. Ammonia as nitrogen, dissolved, (colorimetric, low ionic-strength) data from the National Water Quality Laboratory
4. Ammonia plus organic nitrogen as nitrogen, dissolved, (micro-Kjeldahl digestion, automated segmented flow, colorimetric) data from the National Water Quality Laboratory
5. Ammonia plus organic nitrogen as nitrogen, dissolved, (U.S. Environmental Protection Agency) data from the National Water Quality Laboratory
6. Ammonia plus organic nitrogen as nitrogen, whole-water recoverable, (micro-Kjeldahl digestion, automated segmented flow, colorimetric) data from the National Water Quality Laboratory
7. Ammonia plus organic nitrogen as nitrogen, whole-water recoverable, (U.S. Environmental Protection Agency) data from the National Water Quality Laboratory
8. Nitrate plus nitrite as nitrogen, dissolved, (colorimetric) data from the National Water Quality Laboratory
9. Nitrate plus nitrite as nitrogen, dissolved, (colorimetric, low ionic-strength) data from the National Water Quality Laboratory
10. Nitrate plus nitrite as nitrogen, dissolved, (U.S. Environmental Protection Agency) data from the National Water Quality Laboratory
11. Orthophosphate as phosphorus, dissolved, (colorimetric) data from the National Water Quality Laboratory
12. Orthophosphate as phosphorus, dissolved, (colorimetric, low ionic-strength) data from the National Water Quality Laboratory
13. Phosphorus, dissolved, (micro-Kjeldahl digestion, automated segmented flow, colorimetric) data from the National Water Quality Laboratory
14. Phosphorus, dissolved, (U.S. Environmental Protection Agency) data from the National Water Quality Laboratory
15. Phosphorus, whole-water recoverable, (micro-Kjeldahl digestion, automated segmented flow, colorimetric) data from the National Water Quality Laboratory
16. Phosphorus, whole-water recoverable, (U.S. Environmental Protection Agency) data from the National Water Quality Laboratory
17. Alkalinity, whole-water recoverable, (electrometric titration) data from the National Water Quality Laboratory
18. Aluminum, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
19. Aluminum, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
20. Aluminum, whole-water recoverable, (direct current plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
21. Antimony, dissolved, (hydride generation-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
22. Antimony, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
23. Arsenic, dissolved, (hydride generation-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
24. Arsenic, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry, U.S. Environmental Protection Agency) data from the National Water Quality Laboratory
25. Arsenic, whole-water recoverable, (hydride generation-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
26. Barium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
27. Barium, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
28. Barium, whole-water recoverable, (flame-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
29. Beryllium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
30. Beryllium, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
31. Beryllium, whole-water recoverable, (flame-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
32. Boron, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
33. Cadmium, dissolved, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
34. Cadmium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
35. Cadmium, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
36. Cadmium, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
37. Calcium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
38. Chloride, dissolved, (ion chromatography) data from the National Water Quality Laboratory
39. Chloride, dissolved, (ion chromatography, low ionic-strength) data from the National Water Quality Laboratory
40. Chromium, dissolved, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
41. Chromium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
42. Chromium, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
43. Chromium, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
44. Cobalt, dissolved, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
45. Cobalt, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
46. Cobalt, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
47. Cobalt, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
48. Copper, dissolved, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
49. Copper, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
50. Copper, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
51. Copper, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
52. Dissolved solids, dissolved, (gravimetric) data from the National Water Quality Laboratory
53. Fluoride, dissolved, (ion chromatography) data from the National Water Quality Laboratory
54. Fluoride, dissolved, (ion chromatography, low ionic-strength) data from the National Water Quality Laboratory
55. Iron, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
56. Iron, whole-water recoverable, (flame-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
57. Lead, dissolved, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
58. Lead, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
59. Lead, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
60. Lead, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
61. Lithium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
62. Magnesium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
63. Magnesium, dissolved, (inductively coupled plasma-atomic emission spectrometry, low ionic-strength) data from the National Water Quality Laboratory
64. Manganese, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
65. Manganese, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
66. Manganese, whole-water recoverable, (flame-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
67. Mercury, dissolved, (cold vapor-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
68. Mercury, whole-water recoverable, (cold vapor-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
69. Molybdenum, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
70. Molybdenum, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
71. Nickel, dissolved, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
72. Nickel, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
73. Nickel, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
74. Nickel, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
75. Potassium, dissolved, (flame-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
76. Potassium, dissolved, (flame-atomic absorption spectrophotometry, low ionic-strength) data from the National Water Quality Laboratory
77. Selenium, dissolved, (hydride generation-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
78. Selenium, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry, U.S. Environmental Protection Agency) data from the National Water Quality Laboratory
79. Selenium, whole-water recoverable, (hydride generation-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
80. Silica, dissolved, (colorimetric) data from the National Water Quality Laboratory
81. Silica, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
82. Silver, dissolved, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
83. Silver, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
84. Silver, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
85. Silver, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
86. Sodium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
87. Sodium, dissolved, (inductively coupled plasma-atomic emission spectrometry, low ionic-strength) data from the National Water Quality Laboratory
88. Specific conductance, whole-water recoverable, (electrometric, low ionic-strength) data from the National Water Quality Laboratory
89. Strontium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
90. Sulfate, dissolved, (ion chromatography) data from the National Water Quality Laboratory
91. Sulfate, dissolved, (ion chromatography, low ionic-strength) data from the National Water Quality Laboratory
92. Vanadium, dissolved, (colorimetric) data from the National Water Quality Laboratory
93. Vanadium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
94. Zinc, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the National Water Quality Laboratory
95. Zinc, dissolved, (inductively coupled plasma-mass spectrometry) data from the National Water Quality Laboratory
96. Zinc, whole-water recoverable, (flame-atomic absorption spectrophotometry) data from the National Water Quality Laboratory
97. Ammonia as nitrogen, dissolved, data from the Quality of Water Service Unit laboratory
98. Ammonia plus organic nitrogen as nitrogen, dissolved, data from the Quality of Water Service Unit laboratory
99. Ammonia plus organic nitrogen as nitrogen, whole-water recoverable, data from the Quality of Water Service Unit laboratory
100. Nitrate plus nitrite as nitrogen, dissolved, data from the Quality of Water Service Unit laboratory
101. Orthophosphate as phosphorus, dissolved, data from the Quality of Water Service Unit laboratory
102. Phosphorus, dissolved, data from the Quality of Water Service Unit laboratory
103. Phosphorus, whole-water recoverable, data from the Quality of Water Service Unit laboratory
104. Alkalinity, whole-water recoverable, (electrometric titration) data from the Quality of Water Service Unit laboratory
105. Aluminum, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
106. Aluminum, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
107. Arsenic, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the Quality of Water Service Unit laboratory
108. Barium, dissolved, (graphite furnace-atomic absorption spectrophotometry) data from the Quality of Water Service Unit laboratory
109. Barium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
110. Barium, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
111. Cadmium, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the Quality of Water Service Unit laboratory
112. Calcium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
113. Chloride, dissolved, (ion chromatography) data from the Quality of Water Service Unit laboratory
114. Chromium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
115. Chromium, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
116. Copper, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
117. Copper, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the Quality of Water Service Unit laboratory
118. Copper, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
119. Dissolved solids, dissolved, (gravimetric) data from the Quality of Water Service Unit laboratory
120. Fluoride, dissolved, (ion-selective electrode) data from the Quality of Water Service Unit laboratory
121. Iron, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
122. Iron, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
123. Iron, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry, trace) data from the Quality of Water Service Unit laboratory
124. Lead, dissolved, (graphite furnace-atomic absorption spectrophotometry) data from the Quality of Water Service Unit laboratory
125. Lead, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the Quality of Water Service Unit laboratory
126. Magnesium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
127. Manganese, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
128. Manganese, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
129. Mercury, whole-water recoverable, (cold vapor-atomic absorption spectrophotometry) data from the Quality of Water Service Unit laboratory
130. Nickel, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
131. Nickel, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the Quality of Water Service Unit laboratory
132. Nickel, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
133. Potassium, dissolved, (flame-atomic absorption spectrophotometry) data from the Quality of Water Service Unit laboratory
134. Selenium, whole-water recoverable, (graphite furnace-atomic absorption spectrophotometry) data from the Quality of Water Service Unit laboratory
135. Silica, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
136. Silver, dissolved, (graphite furnace-atomic absorption spectrophotometry, low ionic-strength) data from the Quality of Water Service Unit laboratory
137. Silver, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
138. Silver, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
139. Silver, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry, trace) data from the Quality of Water Service Unit laboratory
140. Sodium, dissolved, (flame-atomic absorption spectrophotometry) data from the Quality of Water Service Unit laboratory
141. Strontium, dissolved, (inductively coupled plasma-atomic emission spectrometry, trace) data from the Quality of Water Service Unit laboratory
142. Strontium, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
143. Strontium, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
144. Strontium, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry, trace) data from the Quality of Water Service Unit laboratory
145. Sulfate, dissolved, (ion chromatography) data from the Quality of Water Service Unit laboratory
146. Zinc, dissolved, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory
147. Zinc, whole-water recoverable, (inductively coupled plasma-atomic emission spectrometry) data from the Quality of Water Service Unit laboratory

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