condition	mean	min	max
4 h after light	4.2	4.2	4.2
8 h after light	1.75	1.5	2.0
12 h after light	12.4	5.3	19.5
4 h after dark	7.15	5.9	8.4
8 h after dark	10.0	4.0	16.0
12 h after dark	9.65	5.2	14.1