Radial profile extracted from a horizontal cut in the center of a FWHM = 30 arcsec Gaussian core image normalized with respect to the reference image peak (shown by the grey shaded area) displayed in linear scale (left). Same radial profile normalized with respect to its peak value (the reference profile is shown by the grey shaded area) displayed in log-scale (right). The data combination methods used are marked in different colors: ALMA 12 m-alone (blue), ALMA 12 m + 7 m (orange), ALMA Feather (pink), ALMA MACF (green) and ALMA 12 m + IRAM-30 m MACF (black).