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Fig. A.2.

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UV-subtracted LOFAR image (144 MHz) with restoring beam of 97″ × 100″. Solid orange contours are [2,3,6,12,24]×σ with σ = 0.59 mJy/beam. The dashed contour marks the -3σ level. Strong negative values are reached at the position of two sources which remained poorly subtracted. The shape of the restoring beam is shown in white at the bottom left corner.

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