The average true range is an exponential moving average of the true range. Wilder based the average true range on 14 periods, so that on day 14, the ATR calculation is the average of the daily true range values for the last 14 days.
Red Butte Skyline Nature Trail. This trails starts at the south end of the Medical Center Trail and is reached in the same way: go up through Fort Douglas to the north entrance of Red Butte.
Once at the top follow the trail southwest passed the summit of Mount Tammany and to an outstanding lookout southwest to Mount Minsi and in both directions up and down the Water Gap. The Red Dot Trail starts at this point and descends back to the parking lot. The descent is steep in places and very rocky.