condition	mean	min	max
4 h after light	8.50563	8.18955	8.82171
8 h after light	6.62369	6.44942	6.79796
12 h after light	7.74774	7.342	8.15348
4 h after dark	8.352893333333334	7.98446	8.91281
8 h after dark	8.697593333333334	8.68824	8.71354
12 h after dark	9.075666666666667	8.70923	9.72406