Table 5.

Model coefficients [centered and scaled (SC)], their standard error (Std. Err.), p-value and confidence interval at 95% (CI) for the LGO conversion model.

Yield	Coeff. SC	Std. Err.	p-value	CI 95% (±)
Constant	0.992	0.029	3.62 × 10−24	0.061
x1	0.050	0.020	0.020	0.041
x2	0.201	0.022	6.08 × 10−10	0.045
x3	0.004	0.021	0.841	0.043
x1*x1	−0.125	0.039	3.59 × 10−3	0.081
x2*x2	−0.119	0.044	0.011	0.089
x3*x3	−0.057	0.039	0.165	0.081
x1*x2	0.020	0.024	0.417	0.049
x1*x3	−0.082	0.024	1.74 × 10−3	0.048
x2*x3	0.028	0.024	0.245	0.049

Significant p-values (< 0.05) are identified in bold.