condition	mean	min	max
4 h after light	8.3	8.3	8.3
8 h after light	18.6	5.4	31.8
12 h after light	13.55	6.5	20.6
4 h after dark	7.4	6.3	8.5
8 h after dark	10.3	10.2	10.4
12 h after dark	9.95	6.2	13.7