condition	mean	min	max
4 h after light	1.4	1.4	1.4
8 h after light	7.2	4.0	10.4
12 h after light	7.25	6.9	7.6
4 h after dark	9.3	3.1	15.5
8 h after dark	13.65	2.1	25.2
12 h after dark	8.45	5.5	11.4