Upper panel: effects of the “vorosity” on the P v profile. All three calculations are for L₀ = 0.5 and d = 0.2. The green line with triangles shows the profile for m = 0.01, the red line with asterisk for m = 0.3, and the thick solid black line for m = 0.1. Lower panel: P v line profiles calculated with standard β-law and constant ionization fraction q_P v = 1 (dotted-red line), compared to the simulation with double-β law and the ionization stratification from the corresponding PoWR model (thick solid black line). Both profiles are calculated for L₀ = 0.5, d = 0.2, r_cl = 1, and m = 0.1. The thin solid blue lines in the panels are the observed spectrum. λ_1∞ and λ_2∞ represent the wavelength associated with the assumed ν_∞.