condition	mean	min	max
4 h after light	15.345011	14.370341	16.319681
8 h after light	16.1669355	14.967449	17.366422
12 h after light	13.760368	13.720212	13.800524
4 h after dark	12.2056325	11.375282	13.035983
8 h after dark	11.467345	11.057649	11.877041
12 h after dark	14.730717	14.730717	14.730717