condition	mean	min	max
4 h after light	6.481093333333334	6.30486	6.664610000000001
8 h after light	6.35846	6.2998	6.44557
12 h after light	6.4881633333333335	6.31042	6.661460000000001
4 h after dark	6.578379999999999	6.367999999999999	6.87787
8 h after dark	6.565576666666667	6.46746	6.6630199999999995
12 h after dark	6.506976666666667	6.36536	6.70269