condition	mean	min	max
4 h after light	6.779566666666667	6.42703	7.02194
8 h after light	6.948569999999999	6.741339999999999	7.14202
12 h after light	7.07371	6.85266	7.35363
4 h after dark	7.195816666666667	7.02683	7.29051
8 h after dark	6.94252	6.850910000000001	7.01963
12 h after dark	7.025773333333333	6.726939999999999	7.25225