condition	mean	min	max
4 h after light	7.5	7.5	7.5
8 h after light	6.2	3.6	8.8
12 h after light	8.0	5.4	10.6
4 h after dark	6.05	4.6	7.5
8 h after dark	14.0	7.9	20.1
12 h after dark	6.5	5.8	7.2