Rossby number as a function of time for the 0.7 (black), 1.0 (red), and 1.3 (green) M_⊙ models for median rotators. The Rossby number is estimated at half a pressure scale height above the base of the convective envelope. The dotted line indicates the saturation Rossby number at Ro = 0.14. The blue and magenta triangles indicates the semi-empirical Rossby numbers for solar-like stars given in Folsom et al. (2016, 2018) and Vidotto et al. (2014b).