There are always still errors regarding the heart rate displayed by the app… especially HF max (Strava takes the corrects one, that from my Suunto Spartan ultra watch)
Even as regards the ascent in meters is quite out of phase ….
Hi this is a known issue
Community Manager / Admin @Suunto
Creator of Quantified-Self.io
youtube.com/c/dimitrioskanellopoulos
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https://www.strava.com/athletes/7586105
And there is a big topic about it!