condition	mean	min	max
4 h after light	5.1	5.1	5.1
8 h after light	15.25	2.1	28.4
12 h after light	22.2	18.9	25.5
4 h after dark	17.25	1.6	32.9
8 h after dark	2.0	1.4	2.6
12 h after dark	8.05	1.3	14.8