condition	mean	min	max
4 h after light	17.3005025	16.857139	17.743866
8 h after light	18.110063	14.186667	22.033459
12 h after light	15.2515605	14.577886	15.925235
4 h after dark	12.944118499999998	10.49411	15.394127
8 h after dark	12.358836	12.294949	12.422723
12 h after dark	9.310478	9.310478	9.310478