condition	mean	min	max
4 h after light	9.3	9.3	9.3
8 h after light	5.55	4.3	6.8
12 h after light	5.25	4.3	6.2
4 h after dark	8.95	5.8	12.1
8 h after dark	8.25	5.9	10.6
12 h after dark	7.6	4.3	10.9