The periodogram and phase-folded diagrams of out-of-eclipse photometric data. The upper, middle, and lower panels use the fourth segment, the eighth segment, and the entire out-of-eclipse photometric data. The left panel: 10 representative peaks of the window function are marked by red stars. 10 representative peaks of the GLS periodogram are marked by green stars. The FAP level is shown in dotted lines to help exclude weak signals. The middle panel: phase-folded light curve using the best period. The right panel: phase-folded light curve using the strongest period. The best periods and strongest periods are the same for the fourth segment.