Comparison between observed and fitted Stokes profiles. Left panels: observations (black circles) and fits (color lines) at the location of the spine. Right panels: observations (black circles) and fits (color lines) at the location of the intraspine. From top to bottom: Stokes I, Q, U, and V. Solid color lines (red and blue) are the fits produced by the MHS inversion, whereas dashed color lines (orange and steel blue) correspond to the fits produced by the MHS ∇ ⋅ B = 0 inversion. The χ² values for each case are also provided. The wavelength scale is given with respect to the first Fe I line at λ₀ = 6301.5012 Å.