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