condition mean min max 0 h after light 9.33345 8.8029 9.864 4 h after light 23.03935 19.4824 26.5963 8 h after light 16.6326 14.6321 18.6331 4 h after dark 22.39395 18.9186 25.8693 8 h after dark 25.5377 24.7125 26.3629 12 h after dark 13.017875 9.35165 16.6841