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Fig. A1
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Continued. Note that for knot 18, which is part of the S4 Jet as discussed in Sect. 3.3.3, the contour levels represent 5 to 45σ in steps of 5σ above the local background instead, due to its brighter nature; also note the presence of a residual from a continuum-subtracted star in the lower left corner of the panel.
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