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Fig. 2.

image

Comparison of the IQR1 values from the first calibration (Eq. (1)) with the observed values IQR[O/Na] for 22 calibrating GCs. The Spearman rank correlation (rS) coefficient, the Pearson linear correlation (rP) coefficients and its p-value are listed in the panel. Different symbols individuate different Galactic populations (see text).

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