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Table 15
Raw data correlation coefficient for the Ontario dataset

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Ammonia
Cadmium
Chloride
Chromium
Copper
Nickel
Nitrate
Nitrite
pH
Phosphorus
Lead
Suspended solid
Temperature
Ammonia
...
0.011
0.171
0.001
0.011
0.051
0.041
0.231
0.051
0.181
0.001
0.001
0.101
Cadmium
0.012
...
0.031
−0.011
0.031
0.041
0.041
0.011
0.041
0.041
0.041
0.021
−0.071
Chloride
0.392
0.132
...
0.001
0.021
0.071
0.111
0.101
0.041
0.111
0.001
0.001
−0.101
Chromium
0.042
0.112
0.162
...
0.001
0.011
0.001
0.001
0.001
0.001
0.001
0.001
−0.021
Copper
0.262
0.092
0.392
0.422
...
0.041
0.011
0.011
0.001
0.041
0.061
0.041
−0.021
Nickel
0.122
0.102
0.252
0.372
0.542
...
0.071
0.031
−0.041
0.131
0.071
0.081
−0.021
Nitrate
0.222
0.102
0.572
0.172
0.412
0.182
...
0.121
0.231
0.271
0.071
0.081
−0.181
Nitrite
0.482
0.082
0.592
0.262
0.552
0.312
0.782
...
0.001
0.121
0.031
0.031
0.011
pH
0.242
0.022
0.312
−0.072
0.022
−0.112
0.332
0.182
...
−0.041
−0.011
−0.031
0.061
Phosphorus
0.462
0.082
0.502
0.312
0.562
0.402
0.392
0.662
0.022
...
0.251
0.451
0.001
Lead
0.022
0.072
0.052
0.122
0.132
0.142
0.052
0.082
−0.052
0.112
...
0.211
−0.051
Suspended solid
0.262
0.082
0.292
0.382
0.582
0.392
0.382
0.532
0.082
0.702
0.102
...
−0.021
Temperature
0.412
−0.092
−0.082
−0.132
−0.012
−0.052
−0.262
−0.052
0.072
0.062
−0.042
0.012
...
Notes:
1. The values above the diagonal represent Pearson’s correlation coefficients.
2. The values above the diagonal represent Spearman’s correlation coefficients.
Data source: Data come from federal, provincial and joint water quality surveillance programs.
Table source: Statistics Canada, 2007, Environment Accounts and Statistics Technical Paper Series, volume 2007, number 3, Behaviour Study on the Water Quality Index of the Canadian Council of Ministers of the Environment, catalogue number 16-001-MWE.