Atmospheric stratifications obtained with the different methods for the Stokes profiles shown in Fig. 6: the initial FALC model (dashed black lines) and the results from the two-line NLTE inversions (red lines), from the WFA using the spectral region ±500 mÅ around the Mg line core (blue), and from the LTE inversion of the Fe line (green). Panels display, from top to bottom, the temperature in K, the LOS velocity in km s⁻¹, the magnetic field strength in G, and the magnetic field inclination in degree.