condition	mean	min	max
4 h after light	7.643801	7.0476	8.240002
8 h after light	7.8985	7.671887	8.125113
12 h after light	8.218339	7.847117	8.589561
4 h after dark	9.195493500000001	9.086878	9.304109
8 h after dark	8.300086	8.060245	8.539927
12 h after dark	8.125113	8.125113	8.125113