condition	mean	min	max
4 h after light	3.7	3.7	3.7
8 h after light	8.6	7.1	10.1
12 h after light	6.95	6.9	7.0
4 h after dark	3.35	2.2	4.5
8 h after dark	5.35	3.5	7.2
12 h after dark	4.8	1.6	8.0