condition mean min max 3 h after light 1.0857123333333334 0.682047 1.33482 6 h after light 1.9509033333333332 1.58726 2.37764 9 h after light 4.474906666666667 3.66871 4.92722 12 h after light 10.3770325 1.77973 14.8744 3 h after dark 15.936 15.7526 16.1531 6 h after dark 20.9396 18.4626 24.2623 9 h after dark 11.97029 9.28716 17.1208 12 h after dark 2.143095 1.88785 2.39834