It plots two (sets of) horizontal lines, telling you how far price must move -- up and down -- from the current price, in order for today's range to reach the same number of pips as X% of a N-day ADR. By supplying a series of values for X, you can see how far price is currently away from completing, for example, 50%, 75% or 100% of the average daily range, in both the upward and downward directions