Balmorhea, Texas has been cooling since the 1940’s. Gavin doesn’t like this, so he lowers 1940’s temperatures by about 1C, and turns cooling into warming.
There is no question that the area was warmer in the 1940’s.
The closest stations to Balmorhea show the same thing. Warmer in the 1940’s, and Gavin tampering with the data to cool the past.
Disclaimer : Mosher says this is all top science.