Final density and temperature structure for a model set-up with (upper row, S18C100K) and without QHPs (lower row). The x-axis shows the radius in au, the y-axis the height divided by the radius. The colour of the left plots indicate the mass density, the colours of the right plot the temperature. The dark red area shows the regions with QHP emission. The optical depth at the observation wavelength is indicated by the radial (dotted line) and vertical (full line) τ = 1 surface.