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. 2018 Oct 2;15(10):2169. doi: 10.3390/ijerph15102169

Figure 3.

Figure 3

Annual runoff volume and annual average total phosphorus (TP) concentrations in Zhaoshandu Reservoir (2005–2016). The vertical error lines are the standard deviation of TP, and the horizontal dotted line represents the Grade II water quality standard goal for TP (0.025 mg/L).