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Fig. 8.
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Radial profiles of the N II/Hα, S II/Hα, S III/S II, O III/S II, and O III/Hβ ratios. Three different H II regions (IDs 112, 113, 120) are represented by different colours as labelled in the legend. Dashed vertical lines represent the sizes of the nebular masks defined in Sect. 3.1.
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