condition	mean	min	max
4 h after light	7.87793	7.77625	7.97059
8 h after light	7.91476	7.8627899999999995	7.9523600000000005
12 h after light	7.22586	7.089410000000001	7.30847
4 h after dark	7.233053333333333	7.11155	7.37211
8 h after dark	7.275916666666666	7.124569999999999	7.484380000000001
12 h after dark	7.124536666666667	6.85094	7.358460000000001