Though I do agree with the sentiment that disproving bullshit is more work than writing it, the linked Google Sheet is a literal import of the raw and modified data sets freely downloadable from the NOAA ftp site.
The whole reason the USCRN was built was because of the problems with the historical network. The USCRN was designed to get more reliable measurements.
The aforementioned spreadsheet illustrates the problems with the USHCN data.