condition	mean	min	max
4 h after light	4.1	4.1	4.1
8 h after light	7.2	3.0	11.4
12 h after light	4.3	3.4	5.2
4 h after dark	18.3	3.6	33.0
8 h after dark	2.85	1.5	4.2
12 h after dark	11.25	2.0	20.5