condition	mean	min	max
4 h after light	7.1	7.1	7.1
8 h after light	5.65	3.7	7.6
12 h after light	8.05	4.4	11.7
4 h after dark	11.5	8.5	14.5
8 h after dark	6.55	3.5	9.6
12 h after dark	3.3	2.4	4.2