Fig. 4

Si abundances and their uncertainties for our sample stars. Membership of the two main clusters in 30 Dor is colour-coded as indicated. Weighted means for NGC 2070, NGC 2060, and field stars are shown by the horizontal solid, dotted, and red-dashed lines, respectively. We note that the parameters for some stars are the same, hence the number of displayed points appears smaller than the total number in the sample.
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