But what's more interesting is the amount of their adjustment has a perfect correlation with increasing CO2. They've clearly got an algorithm which adds a bit to temperatures as CO2 increases. But better than that, it appears to show that to achieve this they adjust ever increasingly more stations to achieve the result so no one station gets a huge increase.
So they started off by "just" increasing 3% of stations, but as off 2014 this was 30%.
The correlation is way to perfect to be anything other than a curve fitting algorithm. The relationship is just too close (98% correlation) to be "natural" or due to the standard list of excuses for temperature readings being increased.
I'm sure all the warmists have debunked this ages ago and decided its not peer-reviewed so it doesn't count. But to anyone with an open mind and understands statistics if the data presented is correct its absolutely damning of what these guys are up to.