condition	mean	min	max
4 h after light	2.4	2.4	2.4
8 h after light	18.9	4.8	33.0
12 h after light	8.35	6.2	10.5
4 h after dark	4.0	3.5	4.5
8 h after dark	6.2	5.4	7.0
12 h after dark	3.05	2.4	3.7