Model Summary
S	R-square	R-Square (adjusted)		R-Square (def)
7.58229	88.13%	87.31%		86.12%
Analysis of variance
Source	GL	SC	MC	Value F	Value P
Regression	2	12373.7	6186.86	107.62	0.000
Date	1	654.5	654.53	11.39	0.002
Open	1	700.8	700.85	12.19	0.002
Error	29	1667.2	57.49