I previously speculated that the extra data in module 4F may be related to repeatable runout (RRO). However, ISTM that the RRO values on each side of a platter should be the same, unless the servo tracks are laid down one side at a time.
By way of comparison, Samsung's drives appear to perform RRO calibration on a per platter basis rather than for each head.
Code:
PwrOn RRO1x @ H0
Table) cos = -446464, sin = 655360
Coeff) cos = -69509, sin = -3977
DiskSlip : 97 [SrvTrk]
DiskSlip : 94 [SrvTrk]
PwrOn RRO1x @ H2
Table) cos = -447488, sin = 652288
Coeff) cos = 85611, sin = -108729
DiskSlip : 97 [SrvTrk]
DiskSlip : 121 [SrvTrk]
PwrOn RRO1x @ H4
Table) cos = -450560, sin = 652288
Coeff) cos = -119334, sin = 23064
DiskSlip : 97 [SrvTrk]
DiskSlip : 104 [SrvTrk]
But maybe this is just another red herring ...