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