Radial cut of the continuum intensity map of DG Tau at 1.3 mm: every point corresponds to a pixel inside a half-beam across the disk major axis (i = 41°, PA = 128°). Red dots represent the southeast side of the disk, blue dots the northwest side. The large black dots correspond to 5 au bins computed by averaging the two sides. The black curve is the second derivative of the continuum intensity profile. The solid vertical line indicates the center of the continuum enhancement, at 41 au.