I don’t understand this one … I downloaded the streams CSV from the activity data page. The best 20m power is from index 873 to 2073 (1200 seconds) which comes to approx 320w. Thats a very simple sum of the watts and divide by 1200s. You can check it yourself easily.
How do Strava and Garmin have such different values?
I downloaded CSV file from Intervals and everything looks fine there, just as you said.
I converted the original FIT file (which I downloaded from Intervals) for this activity to CSV with two different tools: Convert FIT Files to CSV, and GoldenCheetah. Then calculated some averages.
As you can see there is some difference. Each row with same index in each file represents same point, checked it, these values must represent same period of time.
So, it seems on Intervals power values parsed differently from FIT file. I checked HR values, they seems OK.
Tx for investigating this. That file has an extra power field “C Power” and a subtle bug was causing Intervals.icu to use that instead of “power”.
The bug would only trigger if the first record had “null” (65535) for “C Power”. So it should be very rare. If you spot any more such activities you can do Actions → Reprocess File to fix them.
No… the one which David mentioned that there is a “C Power” data in the stream. (It’s not in the CSV cos like david mentioned, intervals.icu didn’t pull from the normal power stream, it pulled from “C Power”)
So, the (org) FIT file has 2 power numbers/columns… “C Power” and “POwer”
I’m curious what is “C Power”.
YOur Assioma should be paired and using the “Power” column
Yes, you are right. He’s using some Connect IQ apps, dunno which. Up until some time everything was fine.
And now it’s got back to normal
Thanks for the help