condition	mean	min	max
4 h after light	8.36744	8.27046	8.52033
8 h after light	8.49794	8.415280000000001	8.63077
12 h after light	8.484256666666667	8.4113	8.58602
4 h after dark	8.267256666666666	8.15616	8.44218
8 h after dark	8.20564	8.03727	8.33699
12 h after dark	8.076056666666666	7.8593	8.18545