Comparison of the spectral window before and after removing the long gap between Q1 and Q5 for KIC 9693187. In the top panel, the window functions of the original light curve (in blue) and of the light curve after long gap removal (in orange) are shown. The second panel shows the spectral windows in both cases, and the third panel presents a zoom on the first 10 bins of the PSD, as described in the text. The bottom panel shows the cumulative power of the spectral window for both cases.