Wavelet result for the quasi-periodic behaviour of the jet outflow events as observed from the AIA 171 Å channel. The top panel shows the background trend removed (12-point running average) intensity variation with time. The bottom-left panel shows the wavelet power spectrum with 99% confidence-level contours, whereas the bottom-right panel shows the global wavelet power spectrum with 99% global confidence level. The periods P1 and P2 at the locations of the first two maxima in the global wavelet spectrum are also shown above the global wavelet spectrum.