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  • So maybe temperature has not such a big influence?

    It depends. ppm is most stable around 20°C - 30°C, so if you mostly keep watch in wrist or in room temperature then you don't see much difference in ppm. But if you wear watch in winter on top of clothing the difference can be large.

    Here's graph of my Bangle 2 ppm from year ago:
    (horizontal scale is temperature in Celsius, vertical scale is ppm)

  • Ah, ok, interesting, thanks!
    So looks like I am in that low curvature regime all the time indeed.
    (There were lower temperatures outside, but wearing bangle it probably still stayed above 20°)


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