In reply to Cusco:
> Has anyone experienced inconsistent elevation stats with a Wahoo Elemnt Bolt?
> I’ve done the same route across Dartmoor four times (three times last year and then today). The first time the Bolt said the total elevation was 6,600ft, the next two times it said it was 6,400ft and today it said 7,000ft. It’s the exactly the same 63 mile route with the same hills.
> As far as I know, Dartmoor hasn’t risen since last year.
> Does it partly calculate by reference to barometric pressure or some such rather than actual height data via GPS?
It uses pressure, which is generally more precise/accurate that GNSS data for elevation. So wind, changing weather, blowing on the sensor etc will add noise which will accumulate, +- 150m isn't uncommon over a 100km ride and is pretty typical in my experience. I'm not familiar with Wahoo, but if you're a Strava or Garmin user you can force a correction using topographic data.
Post edited at 10:25