[wxqc] Barometric error

[jdogkool32-weather at yahoo.com]

Hello  everyone!
   My barometer seems to be  consistently reading about 19 millibars too low.
http://weather.gladstonefamily.net/qchart/C7651  
 Should I do an altitude adjustment?  I am at 221 meters and I use a La Crosse WS-2310. What's my best solution?
   Thanks,
JD
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