Jitter is the standard deviation of the time variation of the digitized data passed through the equalizer. The jitter
of the leading and the trailing edges is measured relative to the clock of the phase-lock loop and normalized by
the Channel bit clock interval.
Jitter shall be less than 9,0 % of the Channel bit clock period, when measured according to annex F.
Nero CD/DVD Speed only uses the values from PIF for determining quality score, no other factors are used.
Your stated jitter values would be considered excellent!