condition	mean	min	max
4 h after light	6.9	6.9	6.9
8 h after light	10.65	6.9	14.4
12 h after light	7.85	7.6	8.1
4 h after dark	10.85	6.3	15.4
8 h after dark	10.5	6.7	14.3
12 h after dark	6.35	5.2	7.5