Subdivision of V883 Ori-like protoplanetary disk regions based on water phases by comparison with the desorption profile of water from the olivine dust. The violet part represents the ice region of the disk, where all the water is frozen on the dust grains, and it corresponds to the part of the TPD where desorption has not yet started. The blue part represents the snow ring, where the solid and gas phases of the water coexist, and it corresponds to the part of the TPD where most of the desorption takes place. The light gray part represents the gas region, where the water is almost all in the gas phase, and hence the final descending part of the curve. The dashed region represents the optically thick part. The blue lines correspond to the values found in Sect. 4.2, and so the 160 K/80 au line represents the classically defined snow line.