condition mean min max 4 h after light 1947.2 1947.2 1947.2 8 h after light 1900.7 1823.5 1977.9 12 h after light 1950.6 1659.2 2242.0 4 h after dark 2134.45 2036.0 2232.9 8 h after dark 2594.2 2302.8 2885.6 12 h after dark 2879.2 2768.2 2990.2