condition	mean	min	max
4 h after light	4.8	4.8	4.8
8 h after light	6.7	5.9	7.5
12 h after light	11.95	11.1	12.8
4 h after dark	9.5	7.7	11.3
8 h after dark	9.65	6.5	12.8
12 h after dark	22.55	8.1	37.0