condition	mean	min	max
4 h after light	1.9	1.9	1.9
8 h after light	6.65	5.8	7.5
12 h after light	4.8	4.5	5.1
4 h after dark	5.6	3.4	7.8
8 h after dark	2.6	1.6	3.6
12 h after dark	2.85	1.5	4.2