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Fig. 2

image

[Na/Fe] distribution (top panels), one for each OC, as a binned histogram (light blue bars) and a generalised histogram (purple lines). The smoothing kernel width was set equal to the bin size, i.e., 0.1 dex. The typical (median) error bar is also reported in each panel. The bottom panels report the same histograms, but for [O/Fe].

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