Fig. 4From: Ecological assessment of coal mine and metal mine drainage in South Korea using Daphnia magna bioassayComparison between cumulative criterion unit of toxic metals (As, Cd, Cu, Zn) and 24 h toxicity unit (a filled square DS, dry season, unfilled square DS, rainy season, inverted filled triangle ST, dry season, filled triangle ST, rainy season) and Linear regression analysis of CCU and TU (n = 11 in part II) (b)Back to article page