condition	mean	min	max
4 h after light	4.35844	4.34149	4.37539
8 h after light	5.9187899999999996	4.74771	7.08987
12 h after light	15.815185	8.65897	22.9714
4 h after dark	11.4346	11.3525	11.5167
8 h after dark	20.77645	18.7966	22.7563
12 h after dark	3.438835	3.14375	3.73392