condition	mean	min	max
4 h after light	7.2	7.2	7.2
8 h after light	10.2	8.3	12.1
12 h after light	3.15	3.0	3.3
4 h after dark	13.9	2.5	25.3
8 h after dark	6.55	4.1	9.0
12 h after dark	4.9	4.9	4.9