condition mean min max 4 h after light 2649.1 2649.1 2649.1 8 h after light 1983.4 1766.8 2200.0 12 h after light 2261.55 1764.7 2758.4 4 h after dark 2234.1499999999996 2060.1 2408.2 8 h after dark 1996.6999999999998 1662.3 2331.1 12 h after dark 2099.15 1905.4 2292.9