condition	mean	min	max
4 h after light	4.1	4.1	4.1
8 h after light	2.55	2.5	2.6
12 h after light	17.95	8.1	27.8
4 h after dark	8.6	8.6	8.6
8 h after dark	15.65	11.0	20.3
12 h after dark	25.95	7.1	44.8