condition	mean	min	max
4 h after light	8.317743333333333	8.10304	8.48701
8 h after light	8.775936666666666	8.67864	8.909139999999999
12 h after light	9.43159	9.236130000000001	9.57048
4 h after dark	9.5702	9.51328	9.61633
8 h after dark	9.148159999999999	9.08499	9.22379
12 h after dark	8.595223333333333	8.22879	8.84282