RV measurements for two of the long-term stable stars of the catalogue. The RV axis is centred on the mean RV of the star and spans 2 km s⁻¹. The shaded area represents ±300 m s⁻¹. Blue dots represent SOPHIE measurements, green stars CORALIE, pink squares ELODIE, purple triangles HARPS, red diamonds NARVAL, and open black circles RVS. The error bars are too small to be visible, except for the RVS.