Table 6.

Coefficients and powers of the terms of the optimal regression model.

Term (i)	$\mathbf{Coefficient} {\mathit{k}}_{\mathit{i}}$	Power of P	Power of E	Power of C
1	2.88	0	0	0
2	5.47 × 10−6	1.5	2	1
3	−1.45 × 10−5	2	0	1
4	1.18 × 10−4	−2	0.5	−1.5
5	−419.56	−1	0	−1
6	−0.04	0	2	0.5