condition	mean	min	max
0 h after light	7.37329	7.20536	7.54122
4 h after light	7.44135	7.30974	7.57296
8 h after light	9.103625000000001	8.80392	9.40333
4 h after dark	8.055825	7.41576	8.69589
8 h after dark	8.703705	8.45301	8.9544
12 h after dark	7.39907	6.68081	8.11733