Stokes (I, Q, U, V) parameters (from top to bottom) for the Fe I 6301.5 \AMP 6302.5 Å (left), Ca II 8498 Å (middle), and Ca II 8542 Å (right) spectral lines. Black designates the original Stokes profiles, and red corresponds to the inferred spectra using the configuration explained in Sect. 4. The pixel is located at [6.2,12.6] Mm in Fig. 2, and the associated atmosphere is presented in Fig. 5.