Spatial distribution of the longitudinal (top row) and transverse (middle row) components of the magnetic field inferred from the WFA on the Si I line (first column) and on the Ca II line wing (second column) and line centre (third column). The bottom row shows the inclination of the magnetic field obtained by applying Eq. (8a) to the WFA results. The wavelength ranges we considered in the calculations are indicated in the text. The contours tentatively define the area corresponding to the umbra and penumbra computed from the continuum intensity maps presented in Figure 2.