condition	mean	min	max
4 h after light	2.7	2.7	2.7
8 h after light	17.0	2.5	31.5
12 h after light	7.05	6.0	8.1
4 h after dark	14.95	8.1	21.8
8 h after dark	2.4	1.7	3.1
12 h after dark	22.95	5.9	40.0