condition	mean	min	max
4 h after light	4.1	4.1	4.1
8 h after light	3.65	3.5	3.8
12 h after light	6.9	4.2	9.6
4 h after dark	8.4	5.9	10.9
8 h after dark	4.15	2.8	5.5
12 h after dark	3.7	2.7	4.7