condition	mean	min	max
4 h after light	13.555	12.1893	14.9207
8 h after light	15.245000000000001	15.1043	15.3857
12 h after light	18.258850000000002	17.4599	19.0578
4 h after dark	10.859233333333334	10.3644	11.4034
8 h after dark	20.773633333333333	20.5786	20.8909
12 h after dark	15.3573	13.8083	17.4568