Distribution functions as a function of G₀, Γ_mech and A_V for the representative pixels labeled A, B, C and D of Fig. 8. The blue curves represent the distributions as a function of G₀ (first column), Γ_mech (second column) and A_V (third column). The red curves represent the fractional contribution of these distributions to the luminosity of their corresponding pixels. Both curves are normalized to their peak so that we can visually compare the subset of these distributions which contribute to the luminosity.