condition	mean	min	max
4 h after light	4.9	4.9	4.9
8 h after light	9.55	8.9	10.2
12 h after light	8.15	6.0	10.3
4 h after dark	5.2	4.5	5.9
8 h after dark	6.15	5.6	6.7
12 h after dark	8.1	5.1	11.1