condition	mean	min	max
4 h after light	17.852108	17.064434	18.639782
8 h after light	16.0195795	15.845689	16.19347
12 h after light	14.4903855	13.577396	15.403375
4 h after dark	15.4559785	15.404775	15.507182
8 h after dark	16.5696175	16.417913	16.721322
12 h after dark	16.257343	16.257343	16.257343