condition	mean	min	max
4 h after light	7.354056666666667	7.2706800000000005	7.4915199999999995
8 h after light	7.248106666666667	7.13956	7.4079
12 h after light	7.198846666666666	6.8108699999999995	7.48705
4 h after dark	7.308296666666667	7.05023	7.47538
8 h after dark	7.36372	7.29777	7.4017
12 h after dark	7.242179999999999	7.078460000000001	7.397189999999999