Fraction of 2P stars as a function of the radial distance from the cluster center. The dlack dots are derived by Dondoglio et al. (2021) by using HB stars, whereas the results obtained in this paper from M dwarfs are represented with red triangles. The horizontal lines mark the radial interval associated with each point. The dotted and dashed vertical lines mark the core and the half-light radius from the 2010 version of the Harris (1996) catalog.