Quote Originally Posted by larry_arizona View Post
It's taken at wherever the weather station is located. Most of the time is close enough as long as your elevation is same/similar with the Temp, RH within 50 miles.
Normally I would agree with you but in this case, having lived between these two areas my entire life, I can tell for certain that my summer surf lake, Windermere, is hot/semi-arid and Banff is higher/cooler/temperate. You wouldn't think 50miles (as the crow flies) would make that much difference but crossing over the pass and getting into Windermere is like opening the door to the sauna.

Even with that said, it's varying the DA in Banff from 4000' to 5000' depending on the day. 15% lower power output and I bet if the station was actually in Windermere it would show higher.