condition	mean	min	max
4 h after light	8.518183333333333	8.40364	8.70548
8 h after light	8.480486666666666	8.26714	8.81788
12 h after light	8.504159999999999	8.19437	8.913739999999999
4 h after dark	8.36483	8.13964	8.75882
8 h after dark	8.513513333333334	8.357380000000001	8.80397
12 h after dark	8.909213333333334	8.65259	9.4141