Hi Anton
Below is the code to replicate the amplitude spectrum as shown in excel file.
T = readtable('file.xlsx','Sheet',2);
t = T.AccelerationX_Time_;
x = T.AccelerationX;
y = T.AccelerationY;
z = T.AccelerationZ;
plot(t,x,t,y,t,z);
Hope it Helps.
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