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Figure

Concentrations of nitrate and orthophosphate in rivers and total phosphorus in lakes in the period 1992–2007

Figure Created 05 Nov 2010 Published 05 Nov 2010 Last modified 29 Nov 2012
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Total number of stations in parenthesis. Concentrations are expressed as weighted means of annual mean concentrations for rivers and lakes. Only stations with time series of seven years or more are included.
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