Probability graph for 96-hr LC50 and lethal concentrations (mg L-1) determined for Labeo rohita.

Normal Distribution (Maximum Likelihood Estimates at 95% Confidence Interval); Log (Mortality) = -2.0330 + 0.036033 concentration + 27.753; SE= 0.003662; LC50: 56.4217 mgL-1; SE: 2.5165; Confidence± Interval: 51.4578 – 61.5250; Lethal Concentration: 120.9840 mgL-1; SE: 7.1863; Confidence Interval: 109.0904 – 138.3531; Deviance Chi-Square Value = 5.832; Goodness of fit test, p = 0.924.