condition mean min max 0 h after light 8.15785 7.54082 8.77488 4 h after light 6.83247 5.65715 8.00779 8 h after light 12.88255 11.3922 14.3729 4 h after dark 14.2135 13.2892 15.1378 8 h after dark 9.528055 8.48771 10.5684 12 h after dark 7.480639999999999 7.24994 7.71134