condition	mean	min	max
4 h after light	0.5	0.5	0.5
8 h after light	10.05	2.1	18.0
12 h after light	14.799999999999999	10.7	18.9
4 h after dark	8.15	1.0	15.3
8 h after dark	18.75	17.7	19.8
12 h after dark	1.4500000000000002	0.7	2.2