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(Color online). Visual depictions of the magnetic field components and magnitude due to the three alterative configurations of the electrically silent octupoles in FIG. 3. As in FIG. 4, the field components and magnitudes for the first configuration (white arrows in FIG. 3) are in the first column, etc. One difference here is that, as opposed to FIG. 4, colormap limits are different for each plot due to the large field amplitude differences between plots.
