Although the log scaling is not correct on this website for p+f charts, Its still important to show this on log to not make the impression that the most recent price action
is the most volatile since each x and o plotted is for an increase or decrease every .20 cents, unless there is a reversal which requires .60 cents. Since .2 cents at 20$ isn't close to the percentage amount at a price of 5 or 3, the higher the price it is, the more reversals and longer column are formed which makes the false appearance of more volatility
. This scaling also makes these targets more reasonable than on a linear chart.