condition	mean	min	max
4 h after light	3.8	3.8	3.8
8 h after light	13.25	8.4	18.1
12 h after light	18.75	4.3	33.2
4 h after dark	10.25	4.5	16.0
8 h after dark	8.0	1.2	14.8
12 h after dark	2.1	0.3	3.9