Opacity profiles of the opacities used in the code. The different bumps in the profile correspond to opacity transition, where the ice line is located at ≈170 K. The grey area marks the region where the opacity changes due to the melting of ice grains. The maximum temperature during the simulation is reached in the inner parts of the disc, where viscous heating is dominant and can reach up to ≈900 K for the 1 × 10^-7 M_⊙/yr case. Opacities are plotted for a metallicity of 0.01.