condition mean min max 0 h after light 121.0925 115.985 126.2 4 h after light 34.84265 31.6829 38.0024 8 h after light 17.8988 17.4079 18.3897 4 h after dark 48.45645 48.3597 48.5532 8 h after dark 78.1865 77.2674 79.1056 12 h after dark 112.07565 99.1363 125.015