condition	mean	min	max
4 h after light	7.766030000000001	6.82829	8.70377
8 h after light	7.4740400000000005	7.42512	7.52296
12 h after light	8.173605	7.73475	8.61246
4 h after dark	9.131935	8.67401	9.58986
8 h after dark	8.97893	8.89735	9.06051
12 h after dark	9.65836	9.4572	9.85952