Worst representation of a Swedish city?

Sundsvall is the 19th largest city/town in Sweden with 99k inhabitants. But in relation to its size and significance, it's got a horrendously poorly representative airport station. There was a station within the city limits until 1981. During 1961 to June 1981 while the two stations were operating at the same time, the city station had 0.6'C warmer highs and 0.9'C warmer lows, and in January, the mean differed by 1.8'C.

Here are the weatherboxes:
 
And here are the locations of the two stations. As you can see, the city station is barely even within the UHI. (Red marker is the city station's old coordinates, and the blue marker is the airport)