Spatial dependence of the temporal correlation between the remapped SO/PHI-HRT and SDO/HMI signals (top panel), and of the slope (middle panel) and offset (bottom panel) obtained by the linear fit. The blue and red contours show the −200 and +200 G values of the SO/PHI-HRT LoS magnetic field, respectively. The FoV is shown as a yellow box in Fig. 1. The black arrows in each panel indicate the north (N) and east (E) solar limb as in Fig. 1.