Radial variation of the stellar surface density for the MB (top) and EC (bottom) samples in blue. Vertical red lines show the 1.2 and 3 kpc completeness limits. The exponential fit is plotted in magenta, with the h_R and Σ_⊙ parameters expressed in pc and ⋆/pc², respectively. Blue dots joined with solid lines are the ones used for the fit, since it is the region where completeness is ensured.