power

fftPower,fftFreq,fftSignif=fast_fourier(array,cadence=3.0,scale='mHz',siglevel=0.95)
si=np.zeros(fftFreq.max())+fftSignif
fig=plt.figure()
ax=fig.add_subplot(111)
ax.plot(fftFreq[8:],fftPower[8:])
#ax.plot(fftPower[12:])
ax.plot(si)
ax.axis('tight')
#ax.axes.invert_xaxis()
plt.show()