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Anomalous data

I would expect Garmin to be able to auto fix certain types of errant data scenarios. When a cycle activity power meter reading is consistently <200 watts, and then all of a sudden it receives a spike of 40,000+ watts for one second... perhaps it can rule that out...? one or two blips completely ruins the high level averages for the ride. I am very new to garmin fitness tracking (2 rides), but I suppose this will now also impact the FTP and VO2Max calculations which is partly why I chose these technologies to begin with. Very disappointing.

Interestingly, when my activities auto-sync from Garmin to Strava; Strava must have a correction algorithm in place and these issues do not show up there.

Also, interesting. My Fenix 5x+ using the ant+ signal from my power meter seems to capture these errant readings (real-time). but the bluetooth signal from the power meter to iOS or Android never shows this problem. It is not clear if this problem originates at the power meter ant+ signal or at the watch.

I would imagine this algorithm would be extremely easy to implement. I am very surprised it has not been already. suggestions taken from: http://garmin.kiesewetter.nl/
  • distance change > 10km
  • speedchange>20m/s
  • postionchange>10km
  • powerchange>2000w
  • altitude change>100m
  • timestamp not between file creation and now