condition	mean	min	max
4 h after light	10.70605	9.1321	12.28
8 h after light	9.88606	9.21492	10.5572
12 h after light	18.906100000000002	18.8642	18.948
4 h after dark	18.874650000000003	18.8079	18.9414
8 h after dark	15.64135	15.5665	15.7162
12 h after dark	14.747150000000001	14.6613	14.833