condition	mean	min	max
4 h after light	6.3	6.3	6.3
8 h after light	5.05	4.6	5.5
12 h after light	16.35	9.3	23.4
4 h after dark	6.5	5.3	7.7
8 h after dark	10.2	7.4	13.0
12 h after dark	6.25	4.6	7.9