condition	mean	min	max
4 h after light	6.923146666666667	6.9022	6.953139999999999
8 h after light	6.8912933333333335	6.79635	6.94044
12 h after light	7.148863333333334	7.024760000000001	7.22067
4 h after dark	6.7960400000000005	6.673710000000001	6.922510000000001
8 h after dark	6.92156	6.892930000000001	6.96161
12 h after dark	7.209053333333333	7.125360000000001	7.32775