condition	mean	min	max
4 h after light	7.156653333333334	6.9215100000000005	7.300860000000001
8 h after light	6.58195	6.41972	6.77199
12 h after light	6.9221699999999995	6.780889999999999	7.04745
4 h after dark	6.723676666666667	6.50243	6.883030000000001
8 h after dark	6.941943333333333	6.73654	7.20832
12 h after dark	7.17922	6.93239	7.34618