faq exclude incorrect data - weewx/weewx GitHub Wiki

How to exclude obviously incorrect data

Many stations have sensors that emit data that is obviously incorrect.

You may:

• choose to calibrate your sensor to apply a correction to what it reports
• alternately apply min/max limits to exclude data outside reasonable bounds

Please read the above links from the User's Guide carefully, as there is some ordering in how WeeWX processes these stanzas.

Some more complicated examples

One recently posted example shows how flexible WeeWX can be. In this case the station can emit a lightning distance reading yet show a lightning strike count of zero. The example below ensures that lightning distance is not recorded unless there is a corresponding strike count during that interval.

[StdCalibrate]    
    [Corrections](/weewx/weewx/wiki/Corrections)
        lightning_distance = lightning_distance if Atlas_stike_count > 0 else None