condition	mean	min	max
4 h after light	6.234719999999999	5.7269	6.74254
8 h after light	6.847835	6.64276	7.05291
12 h after light	7.778840000000001	7.04446	8.51322
4 h after dark	8.631615	8.32941	8.93382
8 h after dark	8.273905	8.18248	8.36533
12 h after dark	8.86154	8.65405	9.06903