condition	mean	min	max
4 h after light	7.5690645	7.419994	7.718135
8 h after light	8.163835500000001	7.525062	8.802609
12 h after light	8.0074195	7.877475	8.137364
4 h after dark	8.3389345	8.202162	8.475707
8 h after dark	7.6879405	7.47571	7.900171
12 h after dark	8.130646	8.130646	8.130646