Distribution of the measured and derived properties of the final set of absorption lines used in the analysis. The panels show the depth, the σ_NMAD/median values (computed as (1.4826 × MAD)/median) for depth, EW, FWHM, and the σ_NMAD values (computed as 1.4826 × MAD) of the RV, as well as the standard deviation (σ) of the RV measurements across observations. Vertical dashed lines indicate the reference thresholds adopted during the line-selection process (0 and 1 for depth, 0.1 for the σ_NMAD/median of the depth, and 0.3 for the other parameters).