condition	mean	min	max
4 h after light	11.9	11.9	11.9
8 h after light	23.5	14.2	32.8
12 h after light	8.25	6.1	10.4
4 h after dark	5.1	3.9	6.3
8 h after dark	10.5	0.8	20.2
12 h after dark	14.45	6.1	22.8