Same as in Fig. 11, with two additional theoretical absorption profiles calculated with the same reference electron density n_e(3R_p)=6.4×10¹⁰ cm^-3 and magnesium escape rates corresponding to 3σ limits (χ² = 811.4) from the global best fit with Ṁ_Mg⁰=4.1×10⁶ g s^-1 (long-dashed black line) and Ṁ_Mg⁰=5.0×10⁷ g s^-1 (dashed black line). The increase in escape rate raises the depth of the absorption profile with little effect on its velocity range.