condition	mean	min	max
4 h after light	7.659083333333333	7.543880000000001	7.78785
8 h after light	7.560073333333333	7.44095	7.6490100000000005
12 h after light	7.594836666666667	7.49568	7.66145
4 h after dark	7.657586666666667	7.4875	7.862760000000001
8 h after dark	7.72822	7.63743	7.8430100000000005
12 h after dark	7.65843	7.5941600000000005	7.76341