Average large-scale surface magnetic field as a function of the Rossby number for solar-like stars taken from See et al. (2019). Stars are marked by filled circles, color coded according to their mass. Two measurements representative of large-scale field at solar minimum and maximum are marked with squares (and come from Vidotto et al. 2014). V530 Per is the red diamond in the upper left corner. Dashed lines show power laws for the saturated and unsaturated regime, with a slope of −1.19 for unsaturated stars and an average ⟨B_V⟩ of 186 G for saturated stars. The dotted line is a tentative power law with an exponent of ≈ 0.5 for saturated stars.