Wind speed result question

I have simulated some buildings by butterfly in order to get the average wind speed of the building area. I have made the definition according to the example of the Butterfly software that is given . However , when the wind speed simulation is finished, the wind speed result is wired. Can someone wind speed (426.2 KB) model.3dm (69.7 KB) know what’s the problem with my simulation?

Can you share the rhino file in version 5?

OK, I have upload the rhino 5 modelmodel5.3dm (29.5 KB)

What is “average wind speed” and what is the usage?!

I mean the monitor wind speed U value is not in the normal range, I am not sure whether it is my definition that has the problem which leads to the wired result.