condition	mean	min	max
4 h after light	7.239373333333333	6.79895	7.58668
8 h after light	7.428030000000001	7.29143	7.62905
12 h after light	7.393313333333333	7.0509	7.64947
4 h after dark	7.322380000000001	7.098910000000001	7.5945
8 h after dark	7.168566666666667	6.95747	7.475810000000001
12 h after dark	7.00459	6.90665	7.08029