Radial profiles of the deprojected dust continuum image along the semi-major (red, orange) and the semi-minor (green, blue) axes, as well as averaged over the entire azimuth (gray). The black line in the uppermost plot corresponds to the best-fit model of the radial profile found in Sect. 3.1.1. The deprojection assumes that the continuum is geometrically flat. Radial samples are taken every ~1/4 beam (20 mas), and the cuts along the minor and major axes are azimuthally averaged in a cone of ±10° around the corresponding axes. The black arrow highlights a bump in the profile close to the location of PDS 70 b, and the dotted circles mark the location of the second peak.