We are experiencing data-loss of two sensor nodes since 2018-03-26 and 2018-08-28. See also Dashboard: Feinstaub Verlauf with data-loss.
We found the reason for the apparent data-loss: As the geolocation information published by luftdaten.info gets blurred on purpose, the outcome might wobble after running it through the reverse geocoder (luftdatenpumpe.py).
While the outcome yielded a specific road name some time ago, the measurements in question pretended to come from a different location now. As the data feed selection in the Grafana Feinstaub Verlauf Dashboard is based on the location string, it isn’t locked to the
Thanks for investigating the data and finding out about this, @roh!
- We switched the default selection of the Feinstaub Verlauf Dashboard to the recent locations.
luftdatenpumpenow also honors the
footwayfield as another reverse geocoder field name alternative for encoding the name of the road.
Without any doubt, it would be better to lock the selection to location ids or another deterministic identifier which just references an arbitrary label containing the information from the reverse geocoder. This would also save us from storing it in each and every timeseries record.