U.S. Geological Survey Open-File Report 09-0346
Trends in Precipitation Chemistry in the United States,
1983-1994: An Analysis of the Effects in 1995 of Phase I of the Clean Air Act Amendments of 1990, Title IV
Table A.3. Estimated linear annual trends in log10-transformed ionic
concentrations (µeq/L) in preciptation collected from 1983 through
1994.
Hydrogen Ion Sulfate Nitrate Chloride
_______________ _______________ _______________ _______________
Region Site byear p byear p byear p byear p
--------------------------------------------------------------------------------
NE il11 -0.0079 0.0223 -0.0067 0.0318 0.0013 0.7158 -0.0040 0.2390
il18 -0.0061 0.2997 -0.0077 0.0746 0.0049 0.3530 -0.0042 0.3815
il19 -0.0119 0.0163 -0.0099 0.0055 -0.0050 0.1609 -0.0065 0.1466
il35 0.0036 0.5449 -0.0059 0.1972 -0.0013 0.8180 -0.0048 0.4668
il63 0.0004 0.8970 -0.0065 0.0367 0.0012 0.7693 -0.0039 0.3553
in20 -0.0042 0.3220 -0.0137 0.0003 -0.0046 0.3446 -0.0178 0.0018
in22 -0.0005 0.9294 0.0037 0.4555 0.0158 0.0249 -0.0083 0.3505
in34 -0.0135 0.0013 -0.0067 0.0437 -0.0010 0.8112 -0.0055 0.3293
in41 -0.0086 0.0321 -0.0080 0.0366 -0.0066 0.1141 -0.0148 0.0058
ky03 -0.0040 0.3780 -0.0023 0.5826 0.0008 0.8827 -0.0114 0.0848
ky22 -0.0087 0.0422 -0.0134 0.0052 -0.0094 0.0219 -0.0269 0.0001
ky35 -0.0079 0.1202 -0.0067 0.1660 -0.0110 0.1081 -0.0131 0.0113
ky38 -0.0028 0.6512 -0.0036 0.4968 0.0041 0.4610 -0.0021 0.7782
ma01 0.0075 0.4254 -0.0012 0.8630 0.0136 0.1142 0.0000 0.9992
ma08 -0.0049 0.5385 -0.0110 0.1542 -0.0012 0.8839 -0.0078 0.3066
ma13 -0.0107 0.0178 -0.0066 0.1044 0.0052 0.3863 -0.0150 0.0421
md03 -0.0005 0.9042 -0.0025 0.5816 -0.0006 0.8813 -0.0147 0.0725
md13 -0.0053 0.2423 -0.0061 0.1813 -0.0038 0.4338 -0.0091 0.1697
me00 -0.0082 0.1150 -0.0078 0.0780 0.0064 0.2352 -0.0118 0.0624
me02 0.0020 0.7149 -0.0042 0.4572 0.0127 0.0504 -0.0094 0.3398
me09 0.0021 0.7056 -0.0037 0.5382 0.0088 0.1546 -0.0094 0.1688
mi09 -0.0093 0.0302 -0.0111 0.0040 -0.0013 0.7267 -0.0078 0.0714
mi26 -0.0103 0.0364 -0.0139 0.0004 -0.0052 0.2354 -0.0090 0.0343
mi53 -0.0113 0.0211 -0.0079 0.0406 0.0001 0.9885 -0.0087 0.0615
mi98 -0.0159 0.0057 -0.0147 0.0127 -0.0046 0.3689 -0.0118 0.0226
mi99 -0.0068 0.1366 -0.0108 0.0039 0.0028 0.4060 -0.0143 0.0024
nh02 -0.0032 0.4690 -0.0070 0.1637 0.0034 0.5293 -0.0074 0.2576
nj99 -0.0034 0.4997 -0.0008 0.8602 0.0016 0.7765 -0.0070 0.2478
ny08 -0.0075 0.0284 -0.0065 0.0622 -0.0044 0.2342 -0.0115 0.0084
ny10 -0.0086 0.0056 -0.0153 0.0001 -0.0024 0.4344 -0.0183 0.0001
ny20 -0.0020 0.6193 -0.0070 0.0972 -0.0021 0.6233 -0.0178 0.0007
ny52 -0.0087 0.0055 -0.0099 0.0031 -0.0050 0.1262 -0.0165 0.0001
ny65 0.0009 0.7685 -0.0028 0.3993 0.0014 0.6912 -0.0054 0.2310
ny68 0.0015 0.8357 -0.0027 0.7279 0.0038 0.5401 -0.0025 0.7169
ny98 -0.0113 0.0205 -0.0150 0.0075 -0.0065 0.1960 -0.0103 0.0581
ny99 -0.0049 0.3803 -0.0076 0.1905 -0.0078 0.2742 0.0061 0.4115
oh09 -0.0053 0.2185 -0.0057 0.1677 -0.0027 0.6074 -0.0030 0.6104
oh17 -0.0008 0.7971 -0.0020 0.4831 0.0011 0.7477 -0.0021 0.6170
oh49 -0.0005 0.8617 -0.0020 0.5209 0.0031 0.4445 -0.0037 0.4285
oh71 -0.0037 0.1700 -0.0038 0.1961 -0.0024 0.4937 -0.0060 0.1565
pa15 -0.0115 0.0029 -0.0107 0.0146 -0.0112 0.0063 -0.0124 0.0017
pa29 -0.0073 0.0111 -0.0063 0.0646 -0.0026 0.4727 -0.0074 0.0544
pa42 -0.0066 0.1153 -0.0090 0.0576 -0.0068 0.1098 -0.0061 0.1216
pa72 -0.0084 0.1414 -0.0114 0.0576 -0.0058 0.3409 -0.0112 0.1129
va00 -0.0071 0.2086 -0.0060 0.3054 -0.0095 0.1301 -0.0022 0.8013
va13 0.0040 0.4664 0.0005 0.9296 0.0057 0.3405 -0.0089 0.1060
va28 -0.0108 0.0491 -0.0140 0.0235 -0.0104 0.1391 -0.0249 0.0092
vt01 0.0089 0.0955 0.0032 0.5675 0.0115 0.0357 0.0001 0.9879
vt99 -0.0014 0.7963 -0.0025 0.6412 0.0026 0.6647 -0.0059 0.1998
wi28 -0.0268 0.0013 -0.0218 0.0001 -0.0068 0.0830 -0.0179 0.0001
wi36 -0.0114 0.1392 -0.0149 0.0283 0.0021 0.6941 -0.0123 0.0284
wi37 -0.0120 0.1501 -0.0162 0.0025 0.0002 0.9562 -0.0152 0.0005
wi99 -0.0062 0.3222 -0.0119 0.0216 -0.0014 0.8120 -0.0179 0.0035
wv04 -0.0108 0.0067 -0.0170 0.0001 -0.0067 0.1018 -0.0167 0.0003
wv18 0.0034 0.2819 0.0011 0.7326 0.0028 0.4619 -0.0075 0.0211
------------------------------------------------------------------------
SE al10 0.0046 0.3598 -0.0114 0.0196 -0.0055 0.2485 -0.0130 0.0509
al99 -0.0100 0.2235 -0.0133 0.0717 0.0024 0.7559 -0.0043 0.6177
fl03 0.0032 0.4412 -0.0013 0.8206 0.0122 0.0799 -0.0106 0.1122
fl11 0.0013 0.8537 -0.0017 0.7393 0.0124 0.1958 0.0067 0.2483
fl14 -0.0046 0.5881 -0.0033 0.7478 0.0056 0.5341 -0.0054 0.5773
fl41 0.0074 0.4415 -0.0037 0.5991 0.0066 0.3516 -0.0058 0.4472
ga20 -0.0105 0.1714 -0.0099 0.1865 0.0039 0.5734 -0.0021 0.7854
ga41 -0.0026 0.6774 -0.0082 0.1171 -0.0038 0.4310 -0.0163 0.0049
ga50 0.0059 0.3955 -0.0052 0.5223 0.0057 0.5249 -0.0094 0.2148
ms10 -0.0044 0.5831 -0.0159 0.0035 -0.0024 0.6900 -0.0121 0.0699
ms30 -0.0091 0.2335 -0.0191 0.0251 -0.0069 0.3997 -0.0078 0.3072
nc03 -0.0077 0.1809 -0.0119 0.0314 -0.0054 0.3444 -0.0106 0.1246
nc25 -0.0072 0.1975 -0.0141 0.0083 -0.0062 0.2365 -0.0068 0.3808
nc34 -0.0019 0.7005 -0.0026 0.5537 -0.0034 0.4351 -0.0009 0.8916
nc36 0.0123 0.0448 0.0088 0.1231 0.0160 0.0070 0.0029 0.7070
nc41 -0.0108 0.0868 -0.0102 0.0774 -0.0060 0.2626 -0.0136 0.0689
sc06 -0.0063 0.4159 -0.0112 0.1255 0.0070 0.4848 -0.0011 0.9253
tn00 -0.0026 0.5282 -0.0105 0.0100 -0.0026 0.5298 -0.0139 0.0115
tn11 -0.0016 0.7231 -0.0062 0.2070 -0.0040 0.3471 -0.0101 0.0646
tn14 0.0058 0.2280 0.0032 0.5361 0.0113 0.0292 -0.0131 0.0661
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Hydrogen Ion Sulfate Nitrate Chloride
_______________ _______________ _______________ _______________
Region Site byear p byear p byear p byear p
--------------------------------------------------------------------------------
West ak03 -0.0078 0.1649 -0.0175 0.0590 0.0294 0.0031 -0.0051 0.5436
ar02 0.0038 0.5822 -0.0080 0.0567 0.0022 0.6158 0.0028 0.5906
ar03 -0.0045 0.3538 -0.0066 0.2094 -0.0027 0.5885 0.0003 0.9613
ar16 0.0037 0.5186 -0.0040 0.3610 0.0004 0.9299 -0.0101 0.0304
ar27 -0.0104 0.0770 -0.0135 0.0019 -0.0036 0.3342 -0.0068 0.2118
az03 -0.0070 0.5031 -0.0236 0.0040 0.0032 0.6712 -0.0151 0.0927
az06 -0.0034 0.6938 -0.0130 0.1347 -0.0081 0.4321 -0.0045 0.7511
az99 -0.0366 0.0002 -0.0294 0.0007 -0.0014 0.8583 -0.0031 0.7388
ca42 -0.0372 0.0044 -0.0229 0.0429 -0.0156 0.2159 -0.0085 0.5579
ca45 -0.0146 0.0347 -0.0243 0.0005 0.0142 0.2560 -0.0184 0.0565
ca75 -0.0293 0.0061 -0.0157 0.0859 0.0131 0.3207 -0.0167 0.1106
ca88 -0.0260 0.0493 -0.0139 0.0162 0.0011 0.8863 -0.0103 0.3758
ca98 -0.0247 0.0678 -0.0361 0.0025 -0.0133 0.4110 -0.0343 0.0180
ca99 -0.0088 0.2566 -0.0179 0.1957 0.0038 0.8025 -0.0085 0.3723
co00 -0.0132 0.1321 -0.0187 0.0208 -0.0074 0.3478 -0.0244 0.0046
co01 -0.0299 0.0263 -0.0028 0.6968 -0.0031 0.6510 -0.0183 0.1073
co02 0.0013 0.8367 0.0001 0.9926 0.0198 0.0227 -0.0073 0.4296
co15 -0.0014 0.7650 -0.0101 0.0604 0.0059 0.2895 -0.0155 0.0116
co19 -0.0047 0.4830 -0.0176 0.0036 0.0113 0.0252 -0.0065 0.3715
co21 0.0009 0.8308 -0.0080 0.1495 0.0067 0.1281 -0.0133 0.0285
co22 -0.0230 0.0154 -0.0176 0.0047 -0.0048 0.3893 -0.0182 0.0043
co97 0.0041 0.4554 0.0139 0.0074 0.0310 0.0001 0.0089 0.1709
co98 -0.0087 0.1500 -0.0200 0.0005 -0.0004 0.9445 -0.0171 0.0019
co99 -0.0127 0.0521 -0.0113 0.0081 0.0025 0.6494 -0.0059 0.3638
ia08 0.0086 0.4632 -0.0033 0.4813 0.0100 0.0596 -0.0097 0.0909
ia23 -0.0168 0.2193 -0.0098 0.2296 0.0130 0.1534 -0.0065 0.2958
id03 -0.0024 0.7977 -0.0141 0.1391 0.0152 0.0613 -0.0197 0.0418
id11 -0.0285 0.0048 0.0004 0.9704 0.0249 0.0039 -0.0079 0.4423
id15 -0.0160 0.0883 -0.0071 0.3135 0.0140 0.0379 -0.0045 0.5472
ks07 -0.0066 0.3149 -0.0087 0.0668 0.0008 0.8994 -0.0183 0.0030
ks31 -0.0098 0.1796 -0.0027 0.6234 0.0062 0.1499 -0.0075 0.2307
ks32 -0.0128 0.2160 -0.0029 0.7280 0.0148 0.0370 -0.0122 0.1214
la12 -0.0029 0.5603 -0.0104 0.0230 -0.0030 0.5471 -0.0099 0.1090
la30 0.0043 0.4666 -0.0104 0.0453 -0.0040 0.3912 -0.0140 0.0453
mn16 -0.0172 0.0734 -0.0264 0.0003 -0.0075 0.1860 -0.0266 0.0001
mn18 -0.0011 0.8722 -0.0133 0.0035 -0.0004 0.9294 -0.0194 0.0001
mn23 -0.0028 0.8520 -0.0068 0.3498 0.0073 0.2519 -0.0040 0.4793
mn27 -0.0137 0.3366 -0.0183 0.0084 -0.0053 0.3772 -0.0237 0.0001
mo03 -0.0149 0.0068 -0.0155 0.0006 -0.0048 0.2739 -0.0099 0.0378
mo05 -0.0034 0.5337 -0.0071 0.1174 -0.0025 0.5366 -0.0090 0.0884
mt00 -0.0022 0.7876 -0.0093 0.2010 0.0076 0.3329 -0.0215 0.0121
mt05 -0.0041 0.2620 -0.0146 0.0006 0.0046 0.4269 -0.0243 0.0001
mt07 0.0002 0.9741 -0.0103 0.1575 0.0091 0.2344 -0.0212 0.0041
mt13 -0.0105 0.3998 -0.0003 0.9746 0.0095 0.2846 -0.0214 0.0085
nd07 -0.0125 0.1897 -0.0165 0.0306 -0.0034 0.6842 -0.0195 0.0114
nd08 -0.0102 0.4418 -0.0096 0.2117 0.0008 0.9213 -0.0135 0.0697
nd11 -0.0151 0.3370 -0.0190 0.0196 -0.0094 0.2788 -0.0215 0.0135
ne15 -0.0289 0.0287 -0.0114 0.0326 0.0030 0.4631 -0.0174 0.0013
nm07 -0.0048 0.4150 -0.0166 0.0025 -0.0000 0.9990 -0.0297 0.0001
nm08 -0.0238 0.0010 -0.0130 0.1669 0.0065 0.4287 -0.0181 0.1045
nm09 -0.0156 0.0104 -0.0161 0.0037 -0.0020 0.7348 -0.0189 0.0008
nm12 -0.0139 0.3149 0.0101 0.3489 0.0485 0.0064 -0.0176 0.0947
ok00 -0.0059 0.5357 -0.0096 0.1850 -0.0003 0.9699 -0.0286 0.0039
ok17 -0.0063 0.5769 -0.0127 0.1028 -0.0016 0.8316 -0.0205 0.0112
or02 -0.0090 0.0716 -0.0164 0.0057 0.0263 0.0093 -0.0176 0.1037
or09 -0.0078 0.2198 -0.0017 0.8730 0.0268 0.0142 -0.0382 0.0001
or10 -0.0035 0.2885 -0.0180 0.0001 0.0197 0.0137 -0.0149 0.0893
or18 -0.0186 0.0004 -0.0038 0.6025 0.0175 0.0539 -0.0162 0.0118
or97 -0.0163 0.0066 -0.0151 0.0064 0.0144 0.0374 -0.0049 0.5648
or98 -0.0078 0.0560 -0.0095 0.0385 0.0067 0.2232 -0.0046 0.5240
sd08 -0.0100 0.2881 -0.0147 0.0800 -0.0007 0.9371 -0.0170 0.0459
sd99 -0.0487 0.0068 -0.0158 0.0616 -0.0026 0.6719 -0.0108 0.0644
tx03 0.0110 0.3592 -0.0016 0.8229 0.0037 0.5855 -0.0063 0.4529
tx04 -0.0053 0.6905 0.0071 0.4017 0.0228 0.0150 -0.0062 0.5219
tx10 0.0078 0.3687 -0.0003 0.9698 0.0073 0.4139 -0.0122 0.1872
tx16 -0.0139 0.3239 0.0049 0.5639 0.0109 0.2383 0.0073 0.4919
tx21 -0.0012 0.8104 -0.0070 0.0722 -0.0045 0.2785 -0.0120 0.0512
tx22 -0.0302 0.0498 -0.0016 0.8464 0.0217 0.0191 -0.0003 0.9727
tx38 0.0039 0.5252 -0.0097 0.0642 -0.0011 0.8494 -0.0196 0.0019
tx56 -0.0016 0.8836 -0.0106 0.0744 0.0018 0.7848 -0.0190 0.0271
ut01 -0.0693 0.0001 -0.0070 0.2855 0.0017 0.8073 -0.0191 0.0809
wa14 -0.0067 0.3636 -0.0081 0.2183 0.0278 0.0001 -0.0089 0.3204
wa19 -0.0167 0.0021 -0.0140 0.0888 0.0145 0.1039 -0.0142 0.1509
wa21 -0.0076 0.2654 -0.0141 0.0612 0.0081 0.3940 -0.0415 0.0005
wy02 -0.0268 0.0001 -0.0347 0.0001 -0.0036 0.6365 -0.0423 0.0001
wy06 0.0055 0.3794 -0.0095 0.2176 0.0152 0.0289 -0.0174 0.0301
wy08 -0.0210 0.0041 0.0056 0.4784 0.0254 0.0019 -0.0100 0.1477
wy99 -0.0111 0.0807 -0.0146 0.0218 0.0005 0.9254 -0.0226 0.0001
--------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------
Ammonium Calcium Magnesium Potassium Sodium
_______________ _______________ _______________ _______________ _______________
Region Site byear p byear p byear p byear p byear p
-------------------------------------------------------------------------------------------------
NE il11 0.0117 0.0355 -0.0129 0.0431 -0.0151 0.0043 -0.0117 0.0559 0.0024 0.6912
il18 0.0118 0.0607 -0.0138 0.0761 -0.0183 0.0197 -0.0036 0.6820 0.0007 0.9168
il19 0.0003 0.9410 -0.0148 0.0655 -0.0088 0.2157 -0.0182 0.0342 -0.0044 0.5393
il35 0.0034 0.6717 -0.0143 0.0349 -0.0181 0.0150 -0.0159 0.0969 -0.0091 0.3200
il63 -0.0018 0.6898 -0.0143 0.0077 -0.0223 0.0003 -0.0136 0.0555 -0.0090 0.1980
in20 -0.0070 0.1911 -0.0219 0.0043 -0.0324 0.0001 -0.0361 0.0001 -0.0240 0.0047
in22 0.0301 0.0006 0.0083 0.4275 -0.0025 0.7988 -0.0002 0.9895 -0.0156 0.1864
in34 0.0014 0.7831 0.0042 0.5638 -0.0010 0.8858 -0.0221 0.0033 -0.0101 0.1222
in41 -0.0044 0.3781 -0.0178 0.0257 -0.0208 0.0048 -0.0259 0.0032 -0.0092 0.1832
ky03 0.0088 0.2057 -0.0230 0.0038 -0.0180 0.0686 -0.0014 0.9067 -0.0113 0.1387
ky22 -0.0009 0.9015 -0.0470 0.0001 -0.0512 0.0001 -0.0289 0.0001 -0.0171 0.0081
ky35 0.0004 0.9540 -0.0199 0.0448 -0.0339 0.0003 0.0125 0.2247 -0.0120 0.0599
ky38 0.0216 0.0295 -0.0082 0.3705 -0.0192 0.0218 0.0046 0.6210 -0.0036 0.7001
ma01 0.0116 0.1974 -0.0068 0.2261 -0.0015 0.8667 -0.0052 0.5648 0.0006 0.9511
ma08 0.0118 0.2197 -0.0162 0.0486 -0.0201 0.0092 -0.0129 0.1738 -0.0018 0.8426
ma13 0.0120 0.0940 -0.0045 0.5339 -0.0187 0.0068 -0.0026 0.7335 -0.0060 0.4281
md03 0.0152 0.0302 -0.0213 0.0083 -0.0325 0.0011 -0.0171 0.0934 -0.0212 0.0370
md13 0.0039 0.5317 -0.0197 0.0009 -0.0218 0.0016 -0.0106 0.1391 -0.0076 0.2479
me00 0.0087 0.2405 -0.0115 0.0613 -0.0426 0.0001 -0.0221 0.0052 -0.0107 0.1128
me02 0.0178 0.0547 -0.0106 0.1152 -0.0305 0.0010 0.0064 0.6001 -0.0157 0.1176
me09 0.0048 0.6070 -0.0216 0.0030 -0.0338 0.0001 -0.0156 0.0402 -0.0069 0.3542
mi09 -0.0005 0.9356 -0.0100 0.1943 -0.0218 0.0028 -0.0183 0.0132 -0.0052 0.3610
mi26 0.0003 0.9455 -0.0143 0.0419 -0.0202 0.0053 -0.0082 0.1839 -0.0089 0.1961
mi53 0.0098 0.1045 -0.0072 0.2662 -0.0112 0.1229 -0.0152 0.0323 -0.0009 0.8820
mi98 0.0049 0.5931 -0.0131 0.1444 -0.0254 0.0025 -0.0068 0.4334 -0.0145 0.0634
mi99 0.0069 0.2860 -0.0150 0.0201 -0.0320 0.0001 -0.0256 0.0007 -0.0154 0.0164
nh02 0.0053 0.4930 -0.0184 0.0067 -0.0302 0.0001 -0.0167 0.0157 -0.0063 0.3943
nj99 0.0132 0.0981 -0.0190 0.0027 -0.0261 0.0001 -0.0248 0.0020 -0.0054 0.4465
ny08 0.0008 0.8662 -0.0186 0.0068 -0.0317 0.0001 -0.0315 0.0001 -0.0114 0.0760
ny10 -0.0109 0.0405 -0.0188 0.0040 -0.0281 0.0001 -0.0544 0.0001 -0.0202 0.0050
ny20 0.0018 0.7546 -0.0230 0.0007 -0.0407 0.0001 -0.0357 0.0001 -0.0127 0.0716
ny52 -0.0011 0.8286 -0.0164 0.0095 -0.0263 0.0001 -0.0307 0.0001 -0.0142 0.0059
ny65 0.0044 0.4561 -0.0176 0.0169 -0.0366 0.0001 -0.0233 0.0012 -0.0154 0.0177
ny68 0.0135 0.1328 -0.0091 0.2194 -0.0246 0.0072 0.0010 0.9294 0.0018 0.8498
ny98 -0.0035 0.6568 -0.0157 0.0361 -0.0365 0.0001 -0.0044 0.6554 -0.0015 0.8364
ny99 0.0056 0.5701 -0.0174 0.0192 -0.0248 0.0018 0.0011 0.9232 -0.0057 0.5460
oh09 0.0092 0.2388 -0.0036 0.6630 -0.0151 0.0555 0.0188 0.0847 -0.0024 0.7873
oh17 0.0072 0.1942 -0.0182 0.0054 -0.0225 0.0007 -0.0058 0.5138 -0.0063 0.3298
oh49 0.0010 0.8654 -0.0134 0.0357 -0.0224 0.0010 -0.0005 0.9661 -0.0062 0.4210
oh71 -0.0005 0.9278 -0.0094 0.1462 -0.0173 0.0115 -0.0120 0.0811 -0.0014 0.8269
pa15 -0.0023 0.7006 -0.0247 0.0001 -0.0321 0.0001 -0.0137 0.1502 -0.0154 0.0144
pa29 -0.0006 0.9039 -0.0097 0.1080 -0.0223 0.0004 -0.0017 0.8473 -0.0067 0.2011
pa42 -0.0039 0.4734 -0.0154 0.0119 -0.0265 0.0001 -0.0242 0.0216 -0.0141 0.0269
pa72 0.0037 0.6901 -0.0211 0.0029 -0.0257 0.0017 -0.0303 0.0013 -0.0023 0.7895
va00 0.0025 0.7440 -0.0199 0.0286 -0.0227 0.0117 -0.0292 0.0080 -0.0003 0.9766
va13 0.0093 0.1929 -0.0150 0.0423 -0.0295 0.0003 -0.0022 0.8733 -0.0071 0.2669
va28 0.0013 0.8662 -0.0238 0.0078 -0.0417 0.0001 -0.0144 0.1313 -0.0221 0.0246
vt01 0.0045 0.5677 -0.0029 0.6224 -0.0219 0.0003 -0.0171 0.0440 0.0038 0.5971
vt99 0.0059 0.5037 -0.0113 0.1288 -0.0348 0.0001 -0.0049 0.5748 0.0003 0.9615
wi28 -0.0024 0.6708 -0.0228 0.0079 -0.0308 0.0004 -0.0314 0.0002 -0.0141 0.0312
wi36 0.0068 0.4998 -0.0187 0.0335 -0.0316 0.0016 -0.0283 0.0038 -0.0153 0.1055
wi37 0.0010 0.8972 -0.0113 0.1306 -0.0267 0.0020 -0.0351 0.0005 -0.0142 0.0459
wi99 0.0003 0.9718 -0.0165 0.0386 -0.0191 0.0238 -0.0148 0.2346 -0.0143 0.0755
wv04 -0.0069 0.3577 -0.0300 0.0001 -0.0433 0.0001 -0.0332 0.0001 -0.0215 0.0001
wv18 0.0070 0.2133 -0.0069 0.1047 -0.0257 0.0001 -0.0135 0.0179 -0.0083 0.0813
-----------------------------------------------------------------------------------------
SE al10 -0.0118 0.1937 -0.0391 0.0001 -0.0314 0.0001 -0.0265 0.0024 -0.0146 0.0371
al99 0.0083 0.3864 -0.0190 0.0695 -0.0205 0.0346 -0.0113 0.3649 -0.0002 0.9845
fl03 0.0064 0.4598 -0.0182 0.0054 -0.0187 0.0057 -0.0320 0.0001 -0.0075 0.2911
fl11 0.0267 0.0447 -0.0091 0.2255 0.0027 0.6452 0.0102 0.3286 0.0059 0.3199
fl14 -0.0003 0.9835 -0.0233 0.0144 -0.0105 0.2686 -0.0030 0.7989 0.0065 0.5816
fl41 0.0141 0.1903 -0.0144 0.0728 -0.0144 0.0655 -0.0175 0.0749 -0.0043 0.5757
ga20 0.0057 0.5612 -0.0297 0.0002 -0.0127 0.1054 0.0056 0.7046 0.0040 0.6438
ga41 0.0055 0.5248 -0.0355 0.0001 -0.0293 0.0001 -0.0048 0.7439 -0.0138 0.0279
ga50 0.0070 0.5915 -0.0271 0.0029 -0.0143 0.0638 0.0005 0.9793 -0.0085 0.2774
ms10 0.0101 0.3477 -0.0165 0.0563 -0.0212 0.0090 -0.0264 0.0396 -0.0122 0.0889
ms30 0.0038 0.7288 -0.0099 0.2497 -0.0249 0.0038 -0.0231 0.0538 -0.0149 0.1713
nc03 0.0062 0.4652 -0.0302 0.0001 -0.0207 0.0023 -0.0117 0.1708 -0.0101 0.1764
nc25 -0.0086 0.2272 -0.0309 0.0001 -0.0236 0.0048 -0.0137 0.1200 -0.0018 0.8236
nc34 -0.0037 0.6407 -0.0281 0.0002 -0.0204 0.0038 -0.0115 0.3963 0.0050 0.5324
nc36 0.0210 0.0207 -0.0098 0.1338 -0.0096 0.1573 -0.0108 0.0787 0.0043 0.5600
nc41 0.0132 0.1178 -0.0275 0.0001 -0.0212 0.0030 -0.0023 0.8442 -0.0100 0.1915
sc06 0.0309 0.0099 -0.0107 0.2185 0.0023 0.8229 0.0374 0.0489 -0.0013 0.9060
tn00 0.0064 0.2939 -0.0350 0.0001 -0.0445 0.0001 -0.0267 0.0003 -0.0137 0.0373
tn11 -0.0090 0.2227 -0.0277 0.0002 -0.0430 0.0001 -0.0413 0.0001 -0.0061 0.3420
tn14 0.0171 0.0300 -0.0016 0.8461 -0.0227 0.0029 -0.0066 0.4436 -0.0103 0.2106
-------------------------------------------------------------------------------------------------
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Ammonium Calcium Magnesium Potassium Sodium
_______________ _______________ _______________ _______________ _______________
Region Site byear p byear p byear p byear p byear p
-------------------------------------------------------------------------------------------------
West ak03 0.0097 0.2275 -0.0210 0.0867 -0.0372 0.0008 -0.0201 0.1431 -0.0093 0.4392
ar02 0.0065 0.3827 -0.0207 0.0016 -0.0101 0.0593 0.0023 0.8260 0.0081 0.1935
ar03 0.0102 0.1434 -0.0074 0.3635 -0.0086 0.2220 0.0180 0.0431 0.0030 0.7039
ar16 -0.0052 0.4459 -0.0275 0.0020 -0.0267 0.0001 -0.0148 0.1001 -0.0096 0.1166
ar27 -0.0046 0.5250 -0.0208 0.0023 -0.0200 0.0016 -0.0056 0.5880 -0.0101 0.1059
az03 0.0162 0.0922 -0.0226 0.0668 -0.0273 0.0232 -0.0214 0.0514 -0.0168 0.1175
az06 -0.0066 0.5281 -0.0087 0.5577 -0.0145 0.2909 -0.0070 0.6017 -0.0042 0.7732
az99 0.0136 0.2219 -0.0017 0.9038 -0.0277 0.0103 0.0002 0.9855 0.0005 0.9694
ca42 -0.0050 0.7201 -0.0312 0.0388 -0.0287 0.0611 -0.0313 0.0463 -0.0040 0.7908
ca45 0.0164 0.1781 -0.0362 0.0001 -0.0324 0.0004 -0.0326 0.0002 -0.0150 0.1392
ca75 0.0282 0.1232 -0.0152 0.2696 -0.0310 0.0030 -0.0164 0.1871 -0.0110 0.3652
ca88 0.0129 0.0435 -0.0364 0.0017 -0.0303 0.0145 -0.0178 0.2434 -0.0139 0.2724
ca98 0.0030 0.8894 -0.0536 0.0009 -0.0606 0.0004 -0.0176 0.3459 -0.0306 0.0637
ca99 0.0120 0.3688 -0.0246 0.0576 -0.0318 0.0036 -0.0193 0.1719 -0.0196 0.1593
co00 0.0082 0.4121 -0.0320 0.0113 -0.0533 0.0001 -0.0272 0.0429 -0.0215 0.0648
co01 0.0234 0.0300 -0.0109 0.3585 -0.0286 0.0177 -0.0269 0.0660 -0.0090 0.4227
co02 0.0305 0.0771 -0.0066 0.5523 -0.0187 0.0906 -0.0225 0.0897 -0.0130 0.3382
co15 0.0142 0.1051 -0.0233 0.0326 -0.0364 0.0004 -0.0256 0.0110 -0.0214 0.0366
co19 0.0180 0.0465 -0.0134 0.1204 -0.0381 0.0002 -0.0094 0.4850 -0.0213 0.0193
co21 0.0234 0.0093 -0.0151 0.0820 -0.0361 0.0001 -0.0335 0.0019 -0.0127 0.1542
co22 0.0046 0.5306 -0.0279 0.0024 -0.0515 0.0001 -0.0180 0.1107 -0.0277 0.0185
co97 0.0467 0.0001 0.0062 0.6337 -0.0172 0.1693 0.0077 0.5319 0.0141 0.3586
co98 -0.0013 0.8761 -0.0293 0.0011 -0.0424 0.0001 -0.0237 0.0189 -0.0136 0.1570
co99 0.0086 0.3675 -0.0147 0.2165 -0.0211 0.0392 -0.0189 0.0372 -0.0043 0.5672
ia08 0.0201 0.0164 0.0016 0.8480 -0.0019 0.8130 -0.0083 0.5353 -0.0064 0.4443
ia23 0.0315 0.0004 -0.0021 0.8575 -0.0118 0.2881 -0.0081 0.4989 -0.0069 0.4131
id03 0.0360 0.0025 -0.0239 0.0771 -0.0412 0.0020 -0.0292 0.0366 -0.0167 0.2168
id11 0.0364 0.0022 -0.0071 0.6023 -0.0302 0.0197 -0.0092 0.4776 0.0102 0.5260
id15 0.0338 0.0061 0.0062 0.6534 -0.0027 0.8377 0.0134 0.2825 0.0062 0.6562
ks07 0.0142 0.0811 -0.0064 0.4658 -0.0224 0.0074 -0.0242 0.0864 -0.0147 0.0795
ks31 0.0128 0.0197 -0.0019 0.8022 -0.0172 0.0223 -0.0121 0.1920 -0.0113 0.1651
ks32 0.0234 0.0057 -0.0011 0.9298 -0.0230 0.0525 -0.0142 0.2298 -0.0094 0.3746
la12 -0.0010 0.9157 -0.0097 0.1033 -0.0147 0.0124 -0.0162 0.0479 -0.0107 0.0992
la30 -0.0101 0.2013 -0.0262 0.0012 -0.0213 0.0029 -0.0213 0.0062 -0.0115 0.1094
mn16 -0.0096 0.2967 -0.0206 0.0054 -0.0264 0.0008 -0.0272 0.0024 -0.0303 0.0001
mn18 -0.0016 0.8589 -0.0275 0.0001 -0.0472 0.0001 -0.0428 0.0001 -0.0312 0.0001
mn23 0.0197 0.0280 -0.0085 0.3770 -0.0164 0.1088 -0.0188 0.0557 -0.0085 0.4652
mn27 -0.0013 0.8649 -0.0208 0.0070 -0.0322 0.0001 -0.0278 0.0016 -0.0206 0.0048
mo03 0.0017 0.7621 -0.0147 0.0555 -0.0166 0.0313 -0.0234 0.0025 -0.0092 0.2708
mo05 0.0035 0.5319 -0.0232 0.0021 -0.0281 0.0002 -0.0134 0.1696 -0.0091 0.1744
mt00 0.0322 0.0019 -0.0188 0.0930 -0.0383 0.0014 -0.0187 0.1662 -0.0228 0.1322
mt05 0.0087 0.3031 -0.0224 0.0039 -0.0354 0.0001 -0.0110 0.1666 -0.0131 0.0544
mt07 0.0136 0.1759 -0.0151 0.0981 -0.0502 0.0001 -0.0301 0.0057 -0.0286 0.0039
mt13 0.0274 0.0475 -0.0297 0.0728 -0.0446 0.0138 -0.0351 0.0054 -0.0093 0.3456
nd07 0.0004 0.9696 -0.0224 0.0454 -0.0246 0.0409 -0.0192 0.1072 -0.0122 0.2919
nd08 0.0138 0.1810 -0.0196 0.0420 -0.0164 0.1259 -0.0115 0.3738 -0.0165 0.1469
nd11 0.0143 0.2633 -0.0219 0.0737 -0.0379 0.0068 -0.0352 0.0041 -0.0335 0.0172
ne15 0.0009 0.8801 -0.0079 0.2113 -0.0216 0.0032 -0.0155 0.0357 -0.0157 0.0580
nm07 0.0097 0.2541 -0.0246 0.0030 -0.0437 0.0001 -0.0504 0.0001 -0.0350 0.0001
nm08 0.0305 0.0179 -0.0054 0.6810 -0.0291 0.0382 -0.0201 0.0878 -0.0245 0.1448
nm09 0.0137 0.1313 -0.0231 0.0271 -0.0412 0.0001 -0.0285 0.0039 -0.0163 0.0426
nm12 0.0569 0.0022 -0.0010 0.9473 -0.0345 0.0290 0.0106 0.6078 0.0064 0.6981
ok00 0.0118 0.2010 -0.0232 0.0664 -0.0375 0.0012 -0.0086 0.4362 -0.0295 0.0066
ok17 0.0016 0.8419 -0.0079 0.4207 -0.0109 0.2265 0.0166 0.2099 -0.0066 0.4928
or02 0.0121 0.0772 -0.0217 0.0104 -0.0230 0.0243 -0.0136 0.1897 -0.0181 0.0964
or09 0.0366 0.0075 -0.0140 0.2809 -0.0298 0.0322 -0.0606 0.0006 -0.0305 0.0408
or10 0.0045 0.5343 -0.0316 0.0001 -0.0281 0.0022 -0.0210 0.0028 -0.0117 0.1769
or18 0.0351 0.0053 -0.0271 0.0324 -0.0385 0.0009 -0.0153 0.2024 -0.0132 0.2308
or97 0.0364 0.0002 -0.0271 0.0003 -0.0196 0.0230 -0.0088 0.2992 -0.0021 0.8083
or98 0.0245 0.0029 -0.0125 0.0184 -0.0133 0.0666 -0.0038 0.6313 -0.0031 0.6674
sd08 0.0072 0.5739 -0.0184 0.1256 -0.0362 0.0085 -0.0324 0.0185 -0.0095 0.4199
sd99 0.0158 0.0683 -0.0083 0.3909 -0.0141 0.0951 -0.0165 0.1315 -0.0027 0.7447
tx03 0.0256 0.0534 -0.0168 0.1650 -0.0100 0.2473 -0.0010 0.9156 -0.0040 0.6466
tx04 0.0231 0.0642 -0.0073 0.6298 -0.0308 0.0017 -0.0120 0.3817 -0.0022 0.8383
tx10 0.0174 0.1183 -0.0233 0.0526 -0.0189 0.0451 0.0053 0.5786 -0.0099 0.3052
tx16 0.0268 0.0392 0.0141 0.3101 -0.0056 0.6321 0.0053 0.6303 0.0066 0.5398
tx21 -0.0053 0.4456 -0.0246 0.0009 -0.0204 0.0011 -0.0104 0.3355 -0.0111 0.0896
tx22 0.0305 0.0045 0.0164 0.2739 -0.0030 0.8056 0.0123 0.3361 -0.0010 0.9376
tx38 -0.0058 0.3922 -0.0283 0.0028 -0.0283 0.0001 -0.0282 0.0118 -0.0194 0.0033
tx56 0.0122 0.1954 -0.0229 0.0286 -0.0306 0.0018 -0.0192 0.1535 -0.0241 0.0248
ut01 0.0140 0.1268 0.0032 0.8287 -0.0098 0.4750 -0.0116 0.2582 -0.0063 0.7102
wa14 0.0037 0.2690 -0.0218 0.0035 -0.0133 0.1546 -0.0092 0.2263 -0.0009 0.9239
wa19 0.0218 0.0416 -0.0257 0.0096 -0.0358 0.0028 -0.0000 0.9979 -0.0019 0.8725
wa21 0.0222 0.0830 -0.0412 0.0001 -0.0516 0.0001 -0.0073 0.5036 -0.0389 0.0010
wy02 0.0074 0.5117 -0.0383 0.0013 -0.0616 0.0001 -0.0340 0.0010 -0.0344 0.0070
wy06 0.0222 0.0291 -0.0192 0.1452 -0.0442 0.0018 -0.0325 0.0186 -0.0188 0.0994
wy08 0.0367 0.0004 0.0042 0.7450 -0.0200 0.0793 -0.0161 0.1091 0.0106 0.3529
wy99 0.0130 0.1780 -0.0143 0.0610 -0.0392 0.0001 -0.0266 0.0016 -0.0358 0.0019
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Last Update: 1536 08JUL96 kjl