condition	mean	min	max
4 h after light	2.1	2.1	2.1
8 h after light	18.05	2.2	33.9
12 h after light	2.7	1.2	4.2
4 h after dark	4.15	2.6	5.7
8 h after dark	2.2	2.0	2.4
12 h after dark	17.85	3.6	32.1