condition mean min max 0 h after light 8.309995 7.53154 9.08845 4 h after light 10.638285 9.50377 11.7728 8 h after light 16.959600000000002 15.7289 18.1903 4 h after dark 24.014049999999997 19.7486 28.2795 8 h after dark 17.071649999999998 16.5072 17.6361 12 h after dark 9.22132 7.01484 11.4278