Demonstration of the advantages of the new version of the PDC periodogram, which takes into account the uncertainties, using RV data of the planet-host star HD 20782 b data. Top: GLS and PDC peri-odograms. The dashed vertical line marks the frequency corresponding to the known orbital period of 597 days. The lower dotted horizontal line corresponds to a FAP level of 10⁻⁹, and the upper one to a level of 10⁻¹³. Middle panels: HARPS RVs measurements for HD 20782, and their estimated measurement uncertainties (plotted separately for clarity). Bottom: RVs phase-folded according to the previously published orbital period.