condition	mean	min	max
4 h after light	2.3	2.3	2.3
8 h after light	14.75	1.7	27.8
12 h after light	18.0	3.0	33.0
4 h after dark	8.5	5.4	11.6
8 h after dark	21.9	13.2	30.6
12 h after dark	11.3	3.6	19.0