condition	mean	min	max
4 h after light	8.1	8.1	8.1
8 h after light	36.45	8.4	64.5
12 h after light	16.75	10.7	22.8
4 h after dark	59.9	53.5	66.3
8 h after dark	57.75	52.9	62.6
12 h after dark	6.2	4.1	8.3