Physical conditions in the representative model. The contour lines are shown for values indicated in the label by small arrows. The thin dashed line indicates z/r = 0.15,0.2, and 0.25. The panels show: a) gas density; b) gas density in linear scale; c) total ionization rate; d) local FUV flux; e) FUV extinction. f) PAH abundance in units of the ISM abundance; g) dust temperature; h) gas temperature; i) ratio of the gas to dust temperature.