Spectral information and computed atmospheres for the six positions indicated with colored diamonds in Fig. 2. Left column: Observed Mg IIh&k profile (gray line), the corresponding representative profile obtained with the k-means method (red dashed line), and the inverted profile using the STiC code (cyan line) in CGS units (erg cm⁻² s⁻¹ sr⁻¹ Hz⁻¹). Three rightmost columns: results from the inversions for T (red), n_e (blue), and V_LOS (green) as functions of log₁₀(τ) with their corresponding inversion uncertainties (±σ). The vertical dashed line in these plots at log₁₀(τ) = − 5.2 indicates the optical depth shown in Fig. 2.