If you examine other SMART reports, you will see that those values are normal.
The problem is that the author of your SMART software doesn't understand Seagate's SMART format. SMART is not standardised -- manufacturers implement SMART in their own proprietary way, and the format often varies between models from the same manufacturer.
The author misinterprets the Hardware ECC reCovered (sic) as a percentage health value. In fact the normalised value of a similar attribute, at least for some Seagate models, is given by the formula ...
Raw Read Error Rate = 10 * log10(NumberOfSectorsTransferredToOrFromHost * 512 * 8 / (Number of sectors requiring retries))
... where the factor of 512*8 is used to convert from sectors to bits. The attribute value is only computed when the number of bits in the transferred bits count is in the range 10^10 to 10^12.
The raw value of the Read Error Rate is actually a sector count, not an error count. When the sector count reaches 250,000,000 or so, it then rolls over to 0.
I don't know how Hardware ECC Recovered is related to Raw Read Error Rate, but I expect that it is logarithmic as well (as is the Seek Error Rate).
