condition	mean	min	max
0 h after light	8.34601	8.17412	8.5179
4 h after light	6.94392	6.47979	7.40805
8 h after light	5.8540399999999995	5.77065	5.93743
4 h after dark	6.750635	6.61606	6.88521
8 h after dark	8.10447	8.07754	8.1314
12 h after dark	7.6663	5.93884	9.39376