Table 2.

Effects of process conditions on milling yields and gelatinization degree. Coefficients of Eq. 8 and statistical parameters

Coefficient	MY1	HRY2	GD3
A0	70.29	90.00	23.55
A1	0.23	0.42**	7.60***
A2	−0.42**	−0.61***	−2.82**
A3	−0.38**	−0.48**	0.88
A11	−0.50**	−0.67**	–
A22	−0.15	−0.22	−4.57***
A33	–	–	−4.15***
A12	−0.43**	−0.63**	−1.49
A13	0.48**	0.68**	0.26
A23	0.06	0.13	2.44
R2	92.5	94.1	96.6
MAE	0.21	0.25	1.49
Durbin-watson	1.24 (P = 0.13)	1.43 (P = 0.23)	1.33 (P = 0.18)

**: significant coefficient to 95 % confidence interval; ***: significant coefficient to 99 % confidence interval; R²: correlation coefficient; MAE: mean absolute error. ¹ milling yield, ² head rice yield, ³ gelatinization degree