Results of our edge-on models described in Sect. 4.1 for incident FUV intensities of G₀ = 100, 500, and 1000 on physical scale, illuminated from the right. The panels show the gas temperature T (upper panels), I_FIR, I_[C II], I_[C II] ∕I_FIR,, I_{[O I] 63 μm}, I_{[O I] 145 μm}, and I_{CO (2–1)} (middle panels) and C⁺, C, O, and CO fractional abundances (lower panels) versus physical scale. The gas densities are n_H = 2.0 × 10³ cm⁻³, 1.0 × 10⁴ cm⁻³, 1.0 × 10⁴ cm⁻³ (left to right panels), and the respective line-of-sight depths are A_V,los = 3, 10, 10. We note that I_[CII]∕I_FIR is a unitless ratio, whose value is given by the y-axis.