condition	mean	min	max
4 h after light	0.5	0.5	0.5
8 h after light	15.6	11.0	20.2
12 h after light	11.95	7.5	16.4
4 h after dark	8.45	8.4	8.5
8 h after dark	6.45	2.0	10.9
12 h after dark	8.65	0.7	16.6