condition	mean	min	max
4 h after light	3.5	3.5	3.5
8 h after light	8.75	1.7	15.8
12 h after light	18.7	12.7	24.7
4 h after dark	4.05	2.0	6.1
8 h after dark	11.25	10.2	12.3
12 h after dark	2.85	2.5	3.2