condition mean min max 4 h after light 1884.3829055 1737.547649 2031.218162 8 h after light 1855.4536145 1759.828474 1951.078755 12 h after light 2247.428532 2185.040705 2309.816359 4 h after dark 1882.335468 1781.868855 1982.802081 8 h after dark 2029.8859615000001 1844.664376 2215.107547 12 h after dark 1897.924364 1897.924364 1897.924364