The stations on the map are uniformely distributed, and the temperature trend is a clear representation of the climate status of the region.
We have colored in the map cities with their corresponding trend colors: blue for cooling and red for warming. We see there was a +1.18º F warming since 1900, but the warming trend has slowed down considerably since 1950, down to +0.03º F. Cities in the map with a blue circle and an inner red dot means stations showing a cooling trend since 1950.
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.