condition	mean	min	max
4 h after light	7.662883333333332	7.620769999999999	7.696789999999999
8 h after light	7.64722	7.40567	7.78258
12 h after light	7.70095	7.58125	7.828810000000001
4 h after dark	7.736026666666667	7.721019999999999	7.7476
8 h after dark	7.656446666666667	7.63087	7.69764
12 h after dark	7.673800000000001	7.539280000000001	7.7793600000000005