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