[idvusers] Threshold for closed circle in station model?

Hi folks,

Before I attempt to look through code that I don't know (in a language I can barely read), can anyone help with a definitive answer to the thresholds used to draw a "calm" circle around a station, a shaft with no barbs, and then the 5 knot increment for the barbs? (I assume that a "short barb" for "5 kts" is drawn is speed is >2.5 kts and <= 7.5, but I have gotten burned by an assumption more than once in the past!)

As always, any help is welcome!

Thanks,
Chris Herbster

--

 Dr. Christopher G. Herbster
 Associate Professor
 Director of Science and Technology
 for the ERAU Weather Center
 Applied Aviation Sciences
 Embry-Riddle Aeronautical Univ.
 600 S. Clyde Morris Blvd.
 Daytona Beach, FL 32114-3900

 386.226.6444 Office
 386.226.6446 Weather Center
 http://wx.erau.edu/

Schedule at:  http://wx.erau.edu/faculty/herbster/Schedules/