highly significantp = 2.05 × 10 −7
For the four higher concentrations, there are highly significant differences among groups (10 −2.5 F 3,76 = 14.145 *** p = 2.05 × 10 −7 ; 10 −2 F 3,76 = 60.371 ***, p = 4.56 × 10 −20 ; 10 −1.5 F 3,76 = 50.504 ***, p = 4.63 × 10 −18 ; 10 − 1 F 3,76 = 26.148 ***, p = 1.01 × 10 −11 ; *** = p < 0.001).