Table 3. Analysis of variance (ANOVA) for the fitted quadratic polynomial model.

Source	Sum of squares	df	Mean Square	F Value	P value	Significance
Model	3.169E+005	9	35211.12	54.88	<0.0001	**
A	22941.89	1	22941.89	35.75	0.0006	**
B	1.405E+005	1	1.405E+005	219.01	<0.0001	**
C	830.28	1	830.28	1.29	0.2928
AB	3875.69	1	3875.69	6.04	0.0436	*
AC	118.37	1	118.37	0.18	0.6805
BC	464.83	1	464.83	0.72	0.4229
A2	4436.63	1	4436.63	6.91	0.0339	*
B2	1.243E+005	1	1.243E+005	193.71	<0.0001	**
C2	11039.04	1	11039.04	17.20	0.0043	**
Residual	4491.62	7	641.66
Lack of fit	435.05	3	145.02	0.14	0.9290
Pure error	4056.57	4	1014.14
Cor total	3.214E+005	16
	R2 = 0.9860	$R_{\mathrm{adj}}^2=0.9681$

Notes.

^*Significant at 0.05 level.

^**Significant at 0.01 level.