{HEAD ~ This corresponding output cylinder pressure} is then compared with the actual known set of {TAIL ~ cylinder pressure data} 
{ HEAD ~ This corresponding output cylinder pressure } is then compared with the actual known set of { TAIL ~ cylinder pressure data }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL