condition	mean	min	max
4 h after light	7.33686	7.29798	7.384110000000001
8 h after light	7.31131	7.2846	7.3595
12 h after light	7.3455466666666664	7.2864	7.39705
4 h after dark	7.44921	7.36892	7.51515
8 h after dark	7.344146666666667	7.26416	7.38693
12 h after dark	7.35114	7.237989999999999	7.42772