Model Summary
S	R-square	R-Square (adjusted)		R-Square (def)
2.40529	83.54%	82.40%		80.50%
Analysis of variance
Source	GL	SC	MC	Value F	Value P
Regression	2	851.33	425.663	73.58	0.000
Date	1	52.58	52.583	9.09	0.005
Open	1	782.35	782.354	135.23	0.000
Error	29	167.78	5.785