condition	mean	min	max
4 h after light	8.102153333333334	7.7786800000000005	8.302810000000001
8 h after light	8.369916666666667	8.27857	8.51527
12 h after light	8.484263333333333	8.38908	8.55826
4 h after dark	8.50686	8.263739999999999	8.66545
8 h after dark	8.485196666666667	8.38973	8.61766
12 h after dark	8.437990000000001	8.30339	8.5835