condition	mean	min	max
4 h after light	6.031623333333333	5.9118	6.16897
8 h after light	6.31989	6.24024	6.36134
12 h after light	6.383986666666667	6.25566	6.50099
4 h after dark	6.16264	6.04663	6.25479
8 h after dark	6.06761	5.8293	6.23568
12 h after dark	6.086276666666667	6.04605	6.14963