condition	mean	min	max
4 h after light	7.14969	7.13095	7.163939999999999
8 h after light	6.9787	6.92403	7.0185
12 h after light	7.20772	7.15932	7.28822
4 h after dark	6.995786666666667	6.935110000000001	7.05605
8 h after dark	7.145506666666667	7.02349	7.28702
12 h after dark	7.243433333333334	7.189660000000001	7.32441