TESS light curves in Sectors 2, 3, 29, and 30 (from top to bottom) represented as normalized flux vs. time (left column), and corresponding GLS periodograms (right column) with indication of the measured periodicity (vertical red line) and its uncertainty (shaded region). Similar periodograms are obtained when using CLEAN (see Messina et al. 2022). The bottom plot shows the periodogram when all four sectors are combined into a unique time series.