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Table 5
Descriptive statistics on parameters for the Quebec dataset

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Units
Effective
Mean
Median
Standard deviation
Chlorophyll a mg/L
1,958
4.277
2.100
8.149
Ammonia mg/L
1,980
0.053
0.020
0.130
Nitrites-nitrates mg/L
1,979
0.495
0.210
0.868
pH pH
1,960
7.642
7.700
0.570
Phosphorus mg/L
1,974
0.054
0.024
0.119
Turbidity mg/L
1,978
8.163
3.900
16.262
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.