condition	mean	min	max
4 h after light	7.77352	7.2961100000000005	8.1125
8 h after light	7.349876666666667	7.160480000000001	7.44782
12 h after light	7.773203333333334	7.5751800000000005	8.10835
4 h after dark	8.543726666666666	8.37026	8.72178
8 h after dark	8.50845	8.405569999999999	8.71181
12 h after dark	8.535490000000001	8.294880000000001	8.77688