Normalized averaged minor axis intensity profiles. For the most inclined sources (resp. least inclined: IRAS 04200, Haro 6-5B, and IRAS 04158), these were obtained by averaging minor axis intensity cuts over the whole major axis extent of the disk (resp. over the central 0.3′′). The light shading corresponds to the normalized rms in each band. The beam sizes in the direction of the minor axis are shown as dotted Gaussian of the corresponding color.