Fig. 12
Correlation between the co-added ID of the H&K lines and the IDs of the three lines in the Ca ii IRT (T1, T2, and T3, from bottom to top). In each panel, the dashed line is the outlier-resistant best fit of the trend (Pearson’s coefficient always ≳0.9). Symbols in gray correspond to the spectra collected during the flaring interval indicated by the X-ray observations (Sect. 3), and not included in the correlation analysis.
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