Stokes profiles corresponding to the three reference pixels (rows). From left to right, Stokes (I, Q, U, V), respectively. Black corresponds to the input profiles, while colours designate the Stokes parameters corresponding to the different node configurations presented in Table 1. Each panel includes the differences between the input and the inferred profiles below the horizontal solid black line. From top to bottom, each reference profile corresponds to an intergranular lane, edge of a granule, and top of a granule, respectively. We show the exact location in Fig. 11, where we provide a zoom onto the region highlighted in the top panel of Fig. 1.