Charlie what you meant to say was Why? Because every single station in Chester County shown above and all of the other stations have had adjustments made to the raw actual data that only after that post observation alterations are made can we see any statistical warming at all. Charlie which of the stations Coatesville, Phoenixville, West Chester, Allentown, Quakertown, Reading etc. did NOT have chilling adjustments made to the 1920's thru 1950's with man made climate change adjustments to the raw data??