This signal only appeared 4x since Apr 1975. What can we learn

The 1st a 28% loss followed from the low, the 2nd a 46% loss, the 3rd a 1.9% loss, & the 4th a 23% loss. Otherwise signal good support level. What more can we learn? Key: 1st 2 Mths after red all 3 Histograms dark green NOT ADVICE DYOR
Key: 1st 2 Mths after red all 3 Histograms dark green. Draw line of support from low of first bar.
The first time had a closing month below red support was on the ninth attempt
Here is a close up of March 2008