condition	mean	min	max
4 h after light	4.1	4.1	4.1
8 h after light	6.1	2.5	9.7
12 h after light	4.9	3.9	5.9
4 h after dark	4.55	4.3	4.8
8 h after dark	7.85	2.5	13.2
12 h after dark	9.35	5.1	13.6