Table 4.

Regression indicators and analysis of variance (ANOVA) for the different models

Indicator	Glu120	Eth23	GY120	EY23
p value
X1	4.79E−11	4.91E−11	0.04175	0.18523
X2	0.00017	1.60E−11	9.122E−5	1.090E−5
X21	0.38003	0.13104	0.26593	0.21956
X22	0.32261	0.78432	0.32293	0.73420
X1X2	0.19371	0.96022	0.82280	0.19477
F value (model)	180.660	184.940	9.36420	14.3010
Significance F	1.82E−9	1.62E−9	0.00156	0.00028
F value (lack of fit)	0.89019	2.00101	0.68907	1.93724
R 2	0.98905	0.98930	0.82401	0.87731
${R^2}_{\text{adj}}$	0.98358	0.98395	0.73601	0.81596