Mongolian or not Mongolian

I already promised to stop my IBD rant, but it did happen that a new Chinese study provoked me to do a little more.  This new study is here and here.   The figure below shows shared IBD segments of 1-2 cM and the ratio between shared segments of Evenks and Mongolians.  If the ratio is high then the Evenk admixture is more likely than the Mongolian one.  If the ratio is low, but over 1, we go closer the Mongolian probability, but the Evenks IBD (Siberians) can act like a proxy for Mongolians.  Ratios below 1 means that the Mongolian admixture is more likely than the Evenk (Siberian) one.