Hinode SP maps. The spatial scale in all panels is the same, with one tick mark of the axis being 1′′. The white contours mark the intensity threshold of 50% of the quiet-Sun intensity. The red contours are independently defined and outline the isocontours of 1867 G of B_ver. Only contours encircling regions larger than 3 Mm² are shown. The arrows point to the disc centre. The black numbers denote the heliocentric angle of the sunspot. The red numbers refer to the scan number as listed in Table A.1.