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