CMD diagrams for the APOGEE field located towards l,b ~ 59.6°, 54.5° with GALAXIA and TRILEGAL source distribution shown in the left and right panels, respectively. The open circles in each panel represent the respective model sources. The rectangular boxes are the masks where the real observed sources are, each colour-coded with the fraction (N_2MASS − N_model)/N_2MASS if N_2MASS>N_model or (N_2MASS − N_model)/N_model if N_2MASS<N_model. The redder colours indicate that the 2MASS sources are in equal number or greater than the number of model sources, while bluer colours denote more model sources. From the colours of the bins, there are more TRILEGAL sources than GALAXIA sources towards the faint magnitudes.