condition	mean	min	max
4 h after light	6.9	6.9	6.9
8 h after light	10.950000000000001	1.8	20.1
12 h after light	8.05	4.6	11.5
4 h after dark	20.05	18.3	21.8
8 h after dark	4.25	2.0	6.5
12 h after dark	5.45	4.4	6.5