Polarized intensity of the two brightest frames of the RM cube in the 3C 196 field:  −3 rad m^-2 (left) and 0 rad m^-2 (right). The RM cube was made with Stokes Q alone, without baselines 7A and 8B and was deconvolved from the RMSF. The angular resolution here is 4.3 arcmin and the conversion factor is 1 mJy beam^-1 = 0.94 K.