condition	mean	min	max
4 h after light	8.3	8.3	8.3
8 h after light	2.5	1.9	3.1
12 h after light	5.95	1.6	10.3
4 h after dark	4.65	3.2	6.1
8 h after dark	9.15	9.0	9.3
12 h after dark	4.9	2.4	7.4