condition	mean	min	max
4 h after light	17.9	17.9	17.9
8 h after light	14.15	2.5	25.8
12 h after light	8.5	2.6	14.4
4 h after dark	29.95	5.1	54.8
8 h after dark	4.5	4.2	4.8
12 h after dark	6.15	5.3	7.0