Table 6: The analysis of variance for main and interaction effects of parameters on SR.

Source SS DOF MS value Prob > At 95% CI % contribution Model 53.68 7 7.67 550.62 <0.0001 Significant   A 46.37 1 46.37 3329.21 <0.0001 Significant 86.17 B 2.42 1 2.42 173.75 <0.0001 Significant 4.49 C 2.38 1 2.38 170.61 <0.0001 Significant 4.42 A2 0.52 1 0.52 37.30 0.0002 Significant 0.96 B2 0.91 1 0.91 65.02 <0.0001 Significant 1.69 C2 1.05 1 1.05 75.20 <0.0001 Significant 1.95 BC 0.081 1 0.081 5.83 0.0389 Significant 0.15 Lack of fit 0.034 5 0.29 0.8937 Nonsignificant   0.9977             Adjusted 0.9959             Predicted 0.9921

CI: confidence interval; DOF: degrees of freedom; MS: mean sum of squares; SS: sum of squares.