I recently updated Weewx from ver 3.7.1 to 4.2.0 on a PI 2.   After nearly 
3 years running continuously it was time to get a new SD card going. The 
3.7.1 update was from a earlier version 3 or later version 2 system. 
Hardware - Davis Vantage 2 with USB datalogger and USB connection to the 
PI. All code and drivers are straight out of the box from Debian/Raspbian 
installation.
Back after the upgrade to 3.7.1 was made, all windDir outputs to charts and 
reporting to sites (CWOP, Wunderground on 5 minute intervals) were in 
discrete 22 degree increments.  Back then, after searching the forums, a 
fix had been posted to get the average wind direction over the reporting 
interval rather than the discrete values. As I recall it was a simple 
change to a couple of code lines. Naturally, I didn't record the fix 
anywhere.  After trying all the same searches on windDir, degrees, ordinals 
etc, I can't fix the fix so I can apply it to the 4.2.0 version.
I would appreciate any help. I don't want to revert to my Weewx 3.7.1 
imaged card for multiple reasons.
Thanks in advance!

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