xz-slices of B intersecting the (anti)BPs positioned at the xy locations indicated by the shaded blue regions in a plotted side-by-side with the magnitude of B versus z averaged over the xy-locations indicated in the shaded blue box in (a), with the error bars representing the standard deviation from the mean. The solid green line represents the z location of the minimum magnitude of B averaged over the xy-locations indicated in the shaded blue box in a, |B|min(z), which may be thought of as the locations of the (anti)BPs.