Fit and corresponding depth-dependent atmospheric models from the STiC inversion for two example pixels P1 (blue solid lines) and P2 (orange solid lines). The observed wavelength points are shown as diamonds. For the Ca II K 3934 Å line, only the synthesized spectra are available in polarimetry (solid gray lines). The locations of P1 and P2 are shown in Fig. 9. Vertical black-dashed lines in the Ca II 8542 Å line line spectra depict the wavelength positions, from which the difference maps shown in Fig. 7 are calculated.