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Table 13
Descriptive statistics of the excursion for the Quebec dataset

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Effective
Mean
Median
Standard deviation
Chlorophyll a
1,958
0.161
0
0.866
Ammonia
1,980
0.012
0
0.155
Nitrites-nitrates
1,979
0.016
0
0.138
pH
1,960
0.001
0
0.009
Phosphorus
1,974
1.083
0
3.871
Turbidity
1,978
0.326
0
1.480
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.