2D marginalized posterior distributions of the free physical parameters of each component (T_dust, τ₁₀₀, N_H2O, n_H2) included in our fits to the H₂O fluxes and continuum flux densities (Sect. 3.1.5). Each panel displays contours at 25% and 50% of the peak likelihood in the parameter-parameter space for each of the three components. Blue, green, and gray colors correspond to the core, the nuclear disk, and the envelope, respectively.