condition mean min max 4 h after light 48.72855 47.1714 50.2857 8 h after light 49.7325 47.5317 51.9333 12 h after light 63.64915 63.3093 63.989 4 h after dark 85.4374 82.4788 88.396 8 h after dark 75.8558 73.3905 78.3211 12 h after dark 62.27785 61.5247 63.031