highly significantp < 0.001
Concentrations for 1995–2008 show highly significant (ANOVA, p < 0.001) differences between the TGP and THEP and the NGP and NHEP, respectively.
Concentrations for 1995–2008 show highly significant (ANOVA, p < 0.001) differences between the TGP and THEP and the NGP and NHEP, respectively.