condition mean min max 4 h after light 7779.4 7779.4 7779.4 8 h after light 7764.6 7377.6 8151.6 12 h after light 7674.2 7330.4 8018.0 4 h after dark 7248.549999999999 7161.2 7335.9 8 h after dark 6731.9 6606.1 6857.7 12 h after dark 6640.85 6130.1 7151.6