Table 1.

Statistical test of the constant and independents in the regression equation $\mathrm{Y}=218.692-0.698{\mathrm{X}}_{\mathrm{t}}-2.043{\mathrm{X}}_{\mathrm{h}}+2.282{\mathrm{X}}_{\mathrm{w}}$

Variable	Coefficient of regression (b)	SE	Standardized coefficient (b′)	t value	P value
Constant	218.69	8.68		5.51	<.001
Temperature (Xt)	−2.04	0.38	−0.45	−5.38	<.001
Humidity (Xh)	−0.70	0.09	−0.50	−7.63	<.001
Wind velocity (Xw)	2.28	0.84	0.21	2.63	<.05