Comparison of PAH results between full treatment with stochastic quantum heating, and simplified method assuming the PAHs to be in radiative equilibrium. The reference model with artificially increased PAH abundance f_PAH = 10 is considered. The upper left plot shows the mean PAH temperature ⟨ T_PAH ⟩, and the upper right plot shows the relative width of the PAH temperature distribution function σ_T/ ⟨ T_PAH ⟩ where . The coloured boxes on the right encircle the disk regions which emit 50% of the PAH features at 3.3 μ, 7.6 μm and 11.3 μm. In the blank regions, the Monte Carlo statistics is too poor to compute the PAH temperature distribution function p(T). The lower left plot explains how we define T_low and T_high by bracketing the local PAH emission coefficient ϵ_ν by two temperatures. The lower right plot compares the SED results obtained with the two different methods using MCMax, with a zoom-in between 2 μm and 30 μm. There is barely any difference.