condition	mean	min	max
4 h after light	15.77075	14.5016	17.0399
8 h after light	12.41235	11.7967	13.028
12 h after light	8.289915	7.98805	8.59178
4 h after dark	12.61545	12.0795	13.1514
8 h after dark	17.37295	15.8395	18.9064
12 h after dark	17.01815	16.509	17.5273