condition	mean	min	max
4 h after light	4.2	4.2	4.2
8 h after light	9.3	9.0	9.6
12 h after light	8.2	6.5	9.9
4 h after dark	13.95	12.2	15.7
8 h after dark	12.15	3.8	20.5
12 h after dark	12.149999999999999	5.4	18.9