Gaia radial velocities for the astrometric members of the Hyades and Pleiades provided by Gaia Collaboration (2018b) as a result of their membership analysis of nearby open clusters. Each of these two clusters has almost200 stars with a Gaia radial velocity. The grey lines indicate the weighted averages of the radial velocity that result from the analysis performed by Gaia Collaboration (2018b). The dispersion around the mean is ~2 km s⁻¹.