condition	mean	min	max
4 h after light	8.865826666666667	8.74601	8.935360000000001
8 h after light	8.97165	8.88495	9.02324
12 h after light	9.148956666666667	9.10327	9.21008
4 h after dark	9.123890000000001	8.93548	9.25116
8 h after dark	9.043883333333333	8.93246	9.1007
12 h after dark	9.21405	9.10648	9.28417