Scheme of the procedure to compute the surface density profiles in the deep mosaic. The four pointings are analysed independently to avoid distortion problems. In step (1), the images from the different epochs for each of the four pointings are combined. In step (2), we analysed the photometry for the four pointings with four different values of the Starfinder parameter, determined the source detection completeness, computed the extinction map. Tables with the photometric and astrometric parameters for the point source detections, for each pointing and StarFinder parameter set are available at the CDS. Finally, we computed the extinction- and completeness-corrected surface density profiles. In the step (3), we computed the surface density profile for all Starfinder parameter sets by combining the results from the four pointings. In step (4), the surface density profiles obtained for each Starfinder set are mean-combined.