Well, the PIF scan (the bottom one) is considered more important than the PIE scan (the top one) to many veterans here at CDFreaks.
The consensus is that anything 20 or less in PIE value is considered 'excellent,' with PIE values of 20-99 considered "very good." <280 is considered "acceptable," but the highest limit for PIF values before you might experience playback problems (depending on the standalone player).
I believe the NEC uses 8ECC scanning, so the max PIF value is 16. Of course, the lower the overall values (single values and totals) are always better. Better media typically gives you lower PIE/PIF IF it's burned at the best speeds for that burner. This is TYG02 (possibly Fuji 8x DVD-R 50 pk from Best Buy) and actually should have at least lower PIF values than that, in my experience at least <500 total PIF. Check the NEC forum and see if this TYG02 is on your NEC 3500 'prefers,' because for an 8x burn, the PIF is higher than it should be. Another thing: ideal PIF is 'spaced out (like from 0-0.5 gb and 2.5-3.5 gb' and not seen in 'clumps (examples would be from the 1.2-2.0 gb point and right before the 4 gb point),' but especially not in a solid, continuous block (not present in your scan).
So, is this a bad or low-quality scan? No. With the PIE and PIF together, I would say it's good, although not very good or excellent on the whole--since again, TYG02 normally has much lower PIF than this. I also am trying to remember if some of extra PIF errors might be due to how to NEC reads the disk, as usually the better readers/scanners tend to be a BenQ 1620/1640, Plextor 712 or 716 or certain Liteons...
However, The quickest way to find out if this at least was a 'good' (readable/playable) burn is to run a Read Transfer Test. If the graph is smooth, then your DVD is readable and should have no problems playing on your standalone player.