condition mean min max 4 h after light 2195.6 2195.6 2195.6 8 h after light 2655.45 1951.5 3359.4 12 h after light 3989.4 3230.5 4748.3 4 h after dark 3405.5 1884.8 4926.2 8 h after dark 2135.3 2006.1 2264.5 12 h after dark 2086.5 1860.0 2313.0