calculate an in degree ratio by dividing {HEAD ~ a number} of in degree correlation coefficients above a second threshold by {TAIL ~ a total number} of in degree correlation coefficients 
by
calculate an in degree ratio by dividing { HEAD ~ a number } of in degree correlation coefficients above a second threshold by { TAIL ~ a total number } of in degree correlation coefficients
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH