condition	mean	min	max
4 h after light	8.66959	4.93338	12.4058
8 h after light	14.41055	13.7298	15.0913
12 h after light	14.306650000000001	13.4547	15.1586
4 h after dark	18.984066666666667	18.0852	20.4127
8 h after dark	12.783	11.8928	13.5046
12 h after dark	9.692543333333333	7.39183	11.0856