A processing device includes a correction table memory which stores data regarding a relationship between a predetermined number of discrete points and {HEAD ~ an equal number} of {TAIL ~ corrected points} 
A processing device includes a correction table memory which stores data regarding a relationship between a predetermined number of discrete points and { HEAD ~ an equal number } of { TAIL ~ corrected points }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL