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Fig. 3

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Pearson correlation coefficients for the relations between SCa   II, Hα, Na i, and He i as a function of mean SCa   II for the 23 stars with values of S index. Open squares are values with FAP  ≤ 0.01, open circles for 0.01 <  FAP  ≤ 0.05, and “plus” (“ + ”) symbols for FAP  > 0.05.

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