Maps of the unsigned longitudinal magnetic flux density. From the left to the right: in 2008 at the center of the solar disk with correction for the PSF; the same without PSF correction; in 2014 at the center of the solar disk with PSF correction; the same without PSF correction; in 2014 at the latitude θ = −18°, showing enhanced network corrected for the PSF; and the same without PSF correction. The scales are in seconds of arc, the vertical axis is along the north-south polar axis, the horizontal axis is along the west-east direction.