Table 3.

Model equation coefficients and statistical parameters.

	Coefficient	p-Value
Constant	20.354	<0.001
Amplitude (Amp)	−0.250	0.632 NS
Ethanol (Eth)	0.445	0.286 NS
Temperature (Temp)	1.475	0.003
Amp × Amp	0.095	0.868 NS
Eth × Eth	−8.502	<0.001
Temp × Temp	−0.081	0.888 NS
Amp × Eth	0.166	0.764 NS
Amp × Temp	−0.362	0.520 NS
Eth × Temp	0.614	0.292 NS
ANOVA:
R2 = 0.973
R2 adj. = 0.965

NS = Non-significant.