condition	mean	min	max
4 h after light	14.2	14.2	14.2
8 h after light	22.0	11.0	33.0
12 h after light	1.4	1.3	1.5
4 h after dark	15.75	12.8	18.7
8 h after dark	2.3	1.5	3.1
12 h after dark	19.1	13.1	25.1