Multiwavelength analysis results of A1. Left panels: probability distributions of dust parameters (a_max, T_dust, Σ_dust) of A1; the red line in each plot is the expected value of each of the dust parameters. Middle panel: optical depths at each radius of the three different wavelengths used in this work. Right panels: comparison of radial intensities from the observations and the model at each wavelength. The plots show very high temperatures and surface densities along the radius of the disk. Particle sizes have increased and are large in comparison with the ISM but still very small for the mid-plane of protoplanetary disks, in agreement with the expectation that not much settling has occurred in very young protoplanetary disks. Lastly, A1 shows optically thick emission at Bands 6 and 4 at the inner radii.