highly significantp < 0.01
ANOVA (Table 4 ) reveals the linear terms A and B and all the quadratic terms A 2 , B 2 and C 2 are highly significant ( p < 0.01).
ANOVA (Table 4 ) reveals the linear terms A and B and all the quadratic terms A 2 , B 2 and C 2 are highly significant ( p < 0.01).