condition	mean	min	max
4 h after light	7.544416666666666	7.45419	7.61302
8 h after light	8.138226666666666	8.01689	8.359910000000001
12 h after light	7.60015	7.43588	7.780760000000001
4 h after dark	7.327246666666667	7.013160000000001	7.58656
8 h after dark	7.771983333333334	7.5675300000000005	7.8872800000000005
12 h after dark	7.286420000000001	7.153410000000001	7.4111