condition	mean	min	max
4 h after light	18.0407	14.5932	21.4882
8 h after light	15.38985	13.7662	17.0135
12 h after light	12.7255	11.7643	13.6867
4 h after dark	14.679066666666667	12.4248	18.6295
8 h after dark	15.0654	13.1627	18.7798
12 h after dark	16.233433333333334	13.0271	18.7932