The stations on the map are uniformely distributed, and the temperature trend is a clear representation of the climate status of the region.
Pennsylvania has warmeed by +0.443º F (0,241º C) in 100 years, or 0.04º F (0,02º C) per decade. As Oregon, it is not much much, especially if corrections are made on the records for offsetting the "urban heat island effect" that can as high as 2 to 4º C. According to the IPCC, they have corrected for this effect, although it is not clear where, when, and by how much they have corrected the data - if they ever did it.
Moreover, this correction for the "urban heat island" effect, would show that those cities that have actually cooled, have cooled by a lot more than the IPCC would like to aknowledge - and the correction would never make apperar those city as warming, as the IPCC would prefer in order to justify its claim of "global warming".
Global warming means there is an overall warming everywhere in the world, but there must be a reason for the cooling in some regions - reason that has not been explained by any climate model. As CO2 is blamed for the temperature increase and as CO2 has increased steadily, there shouldn't be any cooling anywhere. As we see cooling in many places around the world, the relation between CO2 and temperature increase is a false one.
Furthermore, as the relation between CO2 and temperature is derived from computer models, these climatic models are not an accurate image of the climatic system, and they cannot give an accurate prediction of the future climate.