Here's one of Gann's fav swing patterns that later became know as the Gartley and populated by Bryce Gilmore.
the swing projection from A-B is at 1.27 -1.618 downward forming a cluster zone where price is expected to turn on completin of the Gartley,,,
originally Gann would watch the 1.50 area for the turn and would look for price and time to coincide together,,
the horiz lines on the chart project the 1.27,1.5,1.618 in price and the vertical lines project time,,,
as you can see we are now what is know as being squared in price and time,,,considered to be a strong indicator for a turn and noting the isolation that formed in the cluster zone.
conservative entry point for a Gartley pattern is at A with stop under C,,,
extremists would have gone in on the 30th after seeing the 28 week down cycle terminate ,,
with so much TA saying this is on the turn one can barely afford to turn ones nose up,,,mmm.