condition	mean	min	max
4 h after light	1.4	1.4	1.4
8 h after light	24.55	21.0	28.1
12 h after light	13.65	12.9	14.4
4 h after dark	5.05	2.5	7.6
8 h after dark	14.1	13.2	15.0
12 h after dark	10.95	5.5	16.4