2D maps of the sunspot observations at 630 nm. Top/bottom row: original/deconvolved spectra. Left to right: Stokes IQUV. The white dashed line marks the location of the cut shown in Fig. 14; the crosses and the corresponding numbers label the locations of the profiles shown in Fig. 15. The horizontal black/white lines at the upper and lower border of the FOV are caused by the hairlines of POLIS.