TABLE 6.

Results of backward regression models for PTR and SP mean under high input rate conditions.

Dependent variables	R2	Adjusted R2	Predictors	B	Std. error	β	t	p
PTR	0.347	0.295	(Constant)	0.011	0.009		1.23	0.23
			AC CH	0.292	0.097	0.503	3.009	0.006
			SS CH	0.037	0.013	0.464	2.774	0.01
SP mean	0.196	0.165	(Constant)	−3.048	1.319		−2.311	0.029
			LA CH	11.675	4.634	0.443	2.52	0.018