I removed all of the black lines and numbers which confuse Brandon the stalker.
In the blue 1999 version of US temperatures, 1932 was much warmer than 1997. In the red 2014 version, 1997 is warmer than 1932. The total amount of tampering up to 1997 was 0.5C.
Here is another way of looking at it, normalized to 1932. In this view, 1997 has been tampered upwards by 0.5C. No matter how you line them up, the total amount of tampering is always going to be 0.5C.