Hi there joshhazel,
Even though this parameter is considered to be a non critical one, it is below the threshold. I would advise you not to keep crucial data on this drive.
Apart from that, as most of the HDD manufacturers have their own testing tools, It may be a good idea to test the drive with a brand specific tool. Check whether the drive will pass the test and whether it will show similar results.
Cheers,
D_Know_WD