condition	mean	min	max
4 h after light	17.9286805	17.696587	18.160774
8 h after light	18.7798005	18.435829	19.123772
12 h after light	18.1934725	17.706957	18.679988
4 h after dark	18.336688	18.246529	18.426847
8 h after dark	18.0692145	16.273851	19.864578
12 h after dark	17.655871	17.655871	17.655871