condition	mean	min	max
4 h after light	14.07888889	12.02666667	17.24
8 h after light	15.215	9.49	18.94
12 h after light	18.009999999999998	12.83333333	24.2
1.5 h after dark	15.868888887666667	8.483333333	22.8
5.5 h after dark	18.249999999	8.496666667	24.72
9.5 h after dark	10.652222221	7.553333333	14.43333333