Vertical magnetic field map obtained with CRISP (panel a), Hinode/SP (panel b), and SDO/HMI (panel d). The red arrow indicates the north and the black arrow the E-W direction. In panels b and d, the north coincides with the top side of the image. The orange contour indicates the masks employed for the flux calculation. Panel c: average magnetic field strength along the E-W direction calculated from the CRISP data. The dotted lines in panels a and c highlight the region containing the pores.