Core (red symbols) and envelope (blue symbols) rotation rates obtained with the OLA method (see Sects. 6.2.1 and 6.2.2) plotted as a function of the surface gravity. The letter corresponding to each star is specified. The dashed gray lines correspond to the range of surface rotation rates predicted by van Saders & Pinsonneault (2013) for the stars that lie in the range of parameters that they considered. The horizontal and vertical lines indicate 1σ error-bars.