Periodicity of the doppler redshift velocity from SDO/HMI in the regions of jet 1 (upper panels) and jet 2 (lower panels). Left panels: detrended light curves after subtracting the smoothed light curves from the original light curves. Middle panels: wavelet power spectrum and global wavelet power spectrum of the detrended light curves from the doppler redshift velocity. Contour outlines the 95% significance level. Right panels: time profiles in left panels are superimposed with the detrended light curves of the two jets at He I 10 830 Å (red curves).