Hello there, I'm quite curious id there is a mathematical equation to determine your exact subclade.
For example http://www.eupedia.com/images/design/R1b-S28-tree.png , now that I got my results of R1b1b2a1a2d (R1B-U152) and it's not L2, what SNP do I need to find in order to determine weather I am:

Z56 (L4, L100, Z46, Z72)
Z36 (Z40, CTS188)

Thanks :)