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QUAL2Kw graphical illustration of water quality parameters: o—dissolved oxygen, ap—phytoplankton, ab—algae (bottom algae), no—nitrogen (organic), Mo—detritus, Cf—CBOD fast, Cs—CBOD slow, Cr—inorganic carbon, nn—nitrite nitrogen, na—ammonium nitrogen, pi—inorganic phosphorus, and po—organic phosphorus.
