The relationship between {HEAD ~ the compensated write power} at {TAIL ~ each Pcn value} and evaluated value Smn is examined to determine the Pcn that maximizes the linearity of the relationship between and Smn, as the optimum write power compensated value PcO 
The relationship between { HEAD ~ the compensated write power } at { TAIL ~ each Pcn value } and evaluated value Smn is examined to determine the Pcn that maximizes the linearity of the relationship between and Smn , as the optimum write power compensated value PcO
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH