condition	mean	min	max
4 h after light	6.2	6.2	6.2
8 h after light	7.85	2.2	13.5
12 h after light	7.1	6.6	7.6
4 h after dark	12.7	1.9	23.5
8 h after dark	38.65	19.0	58.3
12 h after dark	5.15	5.1	5.2