Table 13.

Multiple regression results for Model 2

	Coefficients S	Standard error	P value
Intercept	16.71912	0	Significant
$R_1$	− 0.03241	0	Significant
$R_{-1}$	− 0.54782	0	Significant
$R_{\frac{1}{2}}$	0.073016	0	Significant
R1 2	− 0.20401	0	Significant