Fig. 4
Boxplot of the derived abundances in M 75 relative to iron. Fe I and Fe II abundances are relative to the Fe I cluster mean. Neutral species are relative to Fe I and ionised species are relative to Fe II. The boxes designate the median values and IQR. The error bars show the minimum and the maximum value. Outliers are shown with circles. An outlier is defined if it deviates by more than 1.5 times the IQR.
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