@DF130 said in Crazy Altitude:
@zhang965 I am close to sea level but on the 5th floor of a building and my S9P (not PP) shows -1m. Has been pulling those stunts all along (and I think my S9B as well, but would have to check). Might be that whenever you are “broadly“ stationary but not from the watch‘s perspective (b/c you eg took a shower, walked the stairs etc), subsequent changes in pressure then get interpreted as changes in altitude w/o any GPS correction as long as you do not start an exercise…
Ja, I know, but I’m concerning during first 2weeks it shows 60m, and then it turned to -12m