Do you really trust temperature data from more that 50 years ago to two decimal places???
Then accounting for statistical error, I don’t put much faith in these data at all.
That’s precisely the point.
This data is used to determine public policy that affects EVERYONE: you, me, our fellow FReepers, and other American citizens.
If the data’s faulty, and it’s being used to perpetuate a contradictory policy anyway, it needs to be none.
Still, as BBB pointed out, it might be explainable; if so, then there we go.