condition mean min max 4 h after light 8.80648 7.48006 10.1329 8 h after light 8.179555 7.27696 9.08215 12 h after light 7.422555 6.87812 7.96699 4 h after dark 9.979614999999999 9.73743 10.2218 8 h after dark 7.4456 7.44436 7.44684 12 h after dark 9.232385 8.89844 9.56633