condition	mean	min	max
4 h after light	8.5	8.5	8.5
8 h after light	33.4	20.4	46.4
12 h after light	18.7	11.7	25.7
4 h after dark	7.3	4.5	10.1
8 h after dark	5.2	4.5	5.9
12 h after dark	8.25	8.2	8.3