condition	mean	min	max
4 h after light	18.555950000000003	17.0634	20.0485
8 h after light	6.71136	6.37558	7.04714
12 h after light	2.88561	2.72816	3.04306
4 h after dark	4.19331	3.81164	4.4451
8 h after dark	5.8086866666666666	4.75524	6.63416
12 h after dark	11.353166666666667	10.8706	12.1104