Examples of temperature, density, and visual extinction vertical profiles in the protoplanetary disk at 300 au used for the chemical modeling. Solid lines are for Model 1 and dashed lines for Model 2 (see Table 2). The vertical profiles for these two models are shown for three different values of the midplane temperature T_mid at 300 au: ~4 K (blue lines), ~20 K (green lines), and ~40 K (red lines). Disk heights depend on the temperature: from the coldest to the warmest model, the disk heights are 29, 62 and 88 au at 300 au.