I’ll do a 1 minute test file later, drop it into fitfileviewer.com and let you know. Pretty certain that auto-pause is the only thing that impacts what is in fit file.
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Sweet! Thanks for the time and effort 
Yes, wahoo at least also uploads to strava with the 0s included. An easy way to check this is with the Sauce browser extension for strava
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Case 1: Auto-Pause “ON”
- Elapsed 63 seconds (WKO)
- Duration 38 seconds (WKO)
- Moving 36 seconds (WKO)
- with duration of 38 seconds I expect to find 38 records in FIT file
31 + 6 + 1 = 38 records
and you can see the 25 second gap (63-38) in WKO:
This doesn’t answer the question. Its just a simple test case. I can see at least one recorded data without cadence, which I believe is because my Garmin 530 is configured to exclude zero cadence from cadence averaging.
Case 2: Include Zero Power and Exclude Zero Cadence
61 seconds recorded
FitFileViewer shows
- 38 seconds with full recording of timestamp, location, power, cadence, HR, temp, torque, pedal smoothness, etc.
- 7 seconds with everything above except torque, smoothness, etc.
- 16 seconds with everything above except cadence
Ok so setting data recording to exclude zero cadence from averaging results in cadence being omitted while I was stopped for about 16 seconds.
Case 3: Exclude Zero Power and Exclude Zero Cadence
63 seconds total, moving time of 35 seconds
- 31 seconds with all data (timestamp, location, power, cadence, HR, temp, torque, pedal smoothness, etc.)
- 1 second without cadence
- 7 seconds without left/right power balance, torque, smoothness
- 24 seconds without cadence, left/right power balance, torque, smoothness
You can see part of the 25 seconds without cadence in this WKO screenshot:
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Sorry I was “showing my work” above. Needed some way to make notes while looking…
The answer, assuming I’m not too tired at the end of a long day, is that on Garmin 530 (and likely all other Garmins):
- power data, including 0, was present in all recorded timestamped data, regardless of “Include zeros in power averaging” status in Recording Options
- during auto-pause no data is recorded
- cadence data is not always included in timestamped data, I’m assuming this is a result of “Include 0 cadence from averaging” Recording Option being disabled
Also, its easier to inspect some things in WKO than it is in FitFileViewer.
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