gausssmooth and 2 color graph

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Good evening.

Another problem has appeared. It is not related to smoothing of the measurements of pressure using SensorTag, but to the value read by iphones. Everything works perfectly well for two last experiments given above with Android phones. An iphone accept the experiment and lunch it but the values are too high as seen on the attached screen capture ! The pressure value should be around 1000 Pa ...

What it could be and how to solve the problem? Unfortunately I do not have an iphone myself ...

Mikhail