This is to check what it looks like when you treat a quad as a series of pairs in the same spot, rather than a coherent object. Same for triples. So what this means is for quads there are 6 pairs for which there is a fractional value already calculated, and for triples there are 3.
when treating them all together it clearly is centralized the mid-sized coherence lengths at roughly 0.8 covering fraction. the contour level 0.2 is the middle feature located at ell_c=3.0 kpc, fc=0.7.
almost a perfect bullseye