condition	mean	min	max
4 h after light	7.462396666666667	7.40344	7.55664
8 h after light	7.444286666666667	7.35889	7.52185
12 h after light	7.443836666666667	7.248760000000001	7.55841
4 h after dark	7.559046666666667	7.3653699999999995	7.832110000000001
8 h after dark	7.62663	7.406389999999999	7.947260000000001
12 h after dark	7.70125	7.57901	7.76863