condition mean min max 4 h after light 1852.7 1852.7 1852.7 8 h after light 1685.05 1487.0 1883.1 12 h after light 1153.05 902.5 1403.6 4 h after dark 1046.25 994.8 1097.7 8 h after dark 1290.6 1139.6 1441.6 12 h after dark 1929.25 1658.1 2200.4