Time series (left column) and GLS periodograms (right column) of the RV measurements and CCF profile variation diagnostics, as extracted from the ESPRESSO 2nd data set of TOI-282. On the left, the red curve in the first panel represents the best-fitting sine function, as derived by fixing period P_b and mid-time of reference transit T_0,b of TOI-282b, while fitting for RV amplitude and offset. On the right, the horizontal dotted red lines mark the 0.1% false alarm probability (FAP). The shaded areas in yellow, orange, and red mark the rotation frequency f_rot, and its first and second harmonics (2f_rot and 3f_rot), along with their 1σ intervals. The transit frequencies f_b, f_c, and f_d of the three planets are marked with vertical blue dotted lines.