condition	mean	min	max
4 h after light	0.5	0.5	0.5
8 h after light	6.65	5.5	7.8
12 h after light	2.95	2.8	3.1
4 h after dark	3.4	1.0	5.8
8 h after dark	3.9	2.8	5.0
12 h after dark	2.9	1.5	4.3