condition	mean	min	max
4 h after light	7.419266666666667	7.111680000000001	7.5988
8 h after light	7.532920000000001	7.38733	7.696460000000001
12 h after light	7.229476666666667	6.9087	7.50317
4 h after dark	7.637020000000001	7.460660000000001	7.84187
8 h after dark	7.838663333333334	7.63448	8.02133
12 h after dark	7.971909999999999	7.944539999999999	8.00504