condition mean min max 3 h after light 2.032176 0.634318 2.82823 6 h after light 1.4677076666666666 0.752333 2.51265 9 h after light 2.1382503333333336 0.382921 4.33774 12 h after light 12.566035 3.46851 29.3752 3 h after dark 59.17973333333333 50.0687 66.1155 6 h after dark 51.1718 48.5716 55.5401 9 h after dark 35.622233333333334 33.9255 37.4524 12 h after dark 20.531599999999997 20.5187 20.5445