Extended Data Fig. 3: Hg concentrations of different fish species in China.
From: Human activities shape important geographic differences in fish mercury concentration levels
a, THg (µg kg-1 ww), b, MeHg (µg kg-1 ww), c, MeHg%. The difference analysis of THg, MeHg and MeHg% among fish species was conducted by Rank transformed one-way ANOVA, owing to the non-normal distribution (Kolmogorov-Smirnov test, K-S test) and non-homogeneity of the variances (Levene test). Categories that share common letter do not differ significantly (two-sided tests): lower case letters are for comparison of Hg among freshwater species and capital letters are for comparison of Hg among marine fish species. The detailed sample sizes are provided in the Source Data, and “n” represents the number of data points per graph.
