Number density of gas-phase (left) and ice-phase (right) methanol as a function of disk radius, r, and height divided by the radius, z/r. Shown are the results from the four models that predict the highest column density of gas-phase methanol at 30 au: TD+PD+XD+FR (top), GR+RD+FR (second), GR+RD (third), and GR+RD+FR+D2G (bottom). The contours in the left-hand plots present the gas temperature structure in units of K, whereas those in the right-hand plots present the integrated UV field in units of erg cm⁻² s⁻¹. All model ingredients are listed in Table 2.