condition	mean	min	max
4 h after light	6.541616666666667	6.24181	6.79926
8 h after light	6.3422	6.195819999999999	6.5008300000000006
12 h after light	6.7527800000000004	6.65706	6.8488
4 h after dark	6.206203333333333	6.14389	6.2661
8 h after dark	6.107093333333333	5.920030000000001	6.2453199999999995
12 h after dark	6.02749	5.59285	6.30072