Table 2.

OLS regression estimation of factors affecting electricity used for cooling. Dependent variable: kWh/day.

Explanatory Variable	(expected sign)	Coefficient Estimate (Std. Error)	Coefficient Estimate (Std. Error)
Mean daily PAR^{^z}	(+)	0.0028^{^y}
Mean daily PAR^{^z}	(+)	(0.0002)
Mean daily high temperature^{^x}	(+)	0.0191^{^y}
Mean daily high temperature^{^x}	(+)	(0.0015)
Maximum daily high PAR^{^w}	(+)		0.0008^{^y}
Maximum daily high PAR^{^w}	(+)		(0.0001)
Maximum daily high temperature^{^v}	(+)		0.0166^{^y}
Maximum daily high temperature^{^v}	(+)		(0.0020)
R²	0.8014	0.7566
F (model)	631.40	486.35
N	316.00	316.00

↵^zDaily PAR readings averaged across readings taken at 15-minute intervals, non-nighttime (PAR > 0).
↵^ycoefficient statistically significant at 0.01 level.
↵^xDaily temperature averaged across readings taken at 15-minute intervals, nonnighttime (PAR > 0).
↵^wThe highest PAR value each day.
↵^vThe highest temperature each day.