Lomb-Scargle periodograms of the full TESS light curve (top two panels) and the 1st moments calculated from the LSD profiles (bottom two panels), with the spectral windows of both data sets. 1stpanel: spectral window of the full TESS light curve, with a zoom-in shown in the inset axes. 2ndpanel: Lomb-Scargle periodogram of the full TESS light curve (black) with the corresponding prewhitened pulsation frequencies with S/N ≥ 5.6. The red and dashed black lines mark independent g-mode pulsations. The orange and dotted lines indicate the combination frequencies. 3rdpanel: spectral window of the 1st moments, with a zoom-in shown in the inset axes. 4thpanel: Lomb-Scargle periodogram of the 1st moments (black) with the corresponding prewhitened pulsation frequencies with S/N ≥ 4.0. The red and dashed black lines mark independent g-mode pulsations.