Simulated CMDs toward the 4 monitored directions (top) with the magnitude (middle) and color (bottom) projections for the stars brighter than I = 18.4, expressed in million of stars per square degree per magnitude. Results from our simple model are plotted with black lines and results from the Besançon model with red lines; the distributions of the EROS observed populations of bright stars (I< 18.4) are superimposed on the projections as light gray histograms.