condition	mean	min	max
4 h after light	7.491723333333333	7.11442	7.9127600000000005
8 h after light	7.58221	7.29387	8.06311
12 h after light	7.703216666666666	7.5109699999999995	7.96979
4 h after dark	7.689033333333334	7.26017	8.1713
8 h after dark	7.737313333333334	7.40367	8.10298
12 h after dark	7.66995	7.4592600000000004	8.03162