condition	mean	min	max
4 h after light	6.406486666666667	6.33284	6.543480000000001
8 h after light	6.1792766666666665	6.0858099999999995	6.23214
12 h after light	6.28439	6.114	6.37903
4 h after dark	6.792976666666667	6.52179	7.12458
8 h after dark	6.67338	6.58747	6.75477
12 h after dark	6.95352	6.809830000000001	7.23119