Average for which priority? Our department breaks down calls into 5 priorities. Hot Shot calls get dispatched immediately and response times are around 2 minutes at code 3. Priority 1's get dispatched right away but no lights and siren. 4 minutes. 2's 3's and 4's are things like old burglaries, car crashes with no injuries not blocking and responses are much slower... so I guess if you averaged it out... you get 11, but it doesn't paint a real picture. I'm sure cities vary with their response codes and times.
The "average" response time seems to factor in only the peak times that most calls come through regardless of the traffic gridlock situation.
