A few links on home station siting
https://www.weather.gov/media/epz/mesonet/CWOP-Siting.pdf
https://www.youngusa.com/blog/siting-how-to-choose-the-best-location-for-your-weather-station/
Actually just looked at radar estimates and actual obs in that area and I think that number looks right. Not sure where in town he is, but there was a little min zone in there.