GLS periodogram (Zechmeister & Kürster 2009) for HARPS-N radial velocity measurements, (α) Radial velocity measurement residuals after fitting the transiting-planet signal, (b) Stellar activity indices of HD 20329 ((c) to (k)). The peak with the maximum power in the periodogram for the RV measurements corresponds to a period of P = 0.9263 days (vertical green line), in agreement with the period of the transiting-planet candidate reported by TESS. The dash-dotted blue and segmented red line represent the 0.01% and 0.1% FAP levels, respectively.