condition	mean	min	max
4 h after light	6.5	6.5	6.5
8 h after light	3.95	2.1	5.8
12 h after light	1.85	1.2	2.5
4 h after dark	2.95	2.2	3.7
8 h after dark	17.1	5.7	28.5
12 h after dark	4.7	2.4	7.0