condition	mean	min	max
4 h after light	4.2	4.2	4.2
8 h after light	8.65	5.3	12.0
12 h after light	15.25	12.7	17.8
4 h after dark	9.45	6.6	12.3
8 h after dark	14.0	11.9	16.1
12 h after dark	16.450000000000003	12.8	20.1