Sunspot cycle strength

So the JuSa analysis show that cycles are divided into weak OFF-cycles, and strong ON-cycles.
But there is a big span in strength within the ON-cycles... can we find another useful correlation?

I bring back the Ju-angle vs strength diagram
-but I leave out the OFF-cycles
-and I have shifted the data by 270 deg

1-we can see a possible linear relationship between angle and strength within the A and B types, and also within the C-type.
2-And again we see that something is going on (deviating) in SC7 and SC20.

I will look into SC7 and SC20 later. Remember that this analysis has left out any influence from Uranus and Neptune, and assuming circular orbits. We could see a possible explanation in this diagram:
http://www.landscheidt.info/images/sunssbam1620to2180gs.jpg

Finally I also show the OFF-cycles (here I have not shifted the x-axis by 270 deg)