Comparison of the Fe II spectrum from our source with the best χ² solutions employing the first three ratios (Section 3.3) in the computation. Top: Fe II spectrum assuming equal contribution from bright and dark sides, displayed with a 24% covering factor. The Fe II template corresponds to the CLOUDY simulation with logΦ(H) = 19.25 cm⁻² s⁻¹, log(P_tot) = 14 cm⁻³ K, Z = 20Z_⊙ and V_turb = 40 km s⁻¹. Bottom: Fe II spectrum assuming a 20% contribution from bright sides and 80% contribution from dark sides, displayed with a 33% covering factor. The Fe II template corresponds to the CLOUDY simulation associated with logΦ(H) = 19.75 cm⁻² s⁻¹, log(P_tot) = 15.50 cm⁻³ K, Z = 20Z_⊙ and V_turb = 100 km s⁻¹.