condition	mean	min	max
4 h after light	2.0	2.0	2.0
8 h after light	24.9	14.5	35.3
12 h after light	4.75	1.7	7.8
4 h after dark	18.75	18.2	19.3
8 h after dark	8.85	5.6	12.1
12 h after dark	2.5	1.2	3.8