gausssmooth and 2 color graph

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Hi,

For my phyphox program of pressure measurements using SensorTag of Texas Instruments I have introduced 'gausssmooth' in order to see averaged pressure value. To the obtained pressure(time) graph I have added a second curve produced by the 'gausssmooth', but after 10 seconds (0.1 sec per point) I got a peak which moves with time. What it could be?

With Brest wishes
Mikhail

phyphox version: 1.17-beta2
file format: 1.11