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Fig. 18.

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Ratios of the absorption equivalent widths for the Balmer lines Hα, the Hβ core, and Hγ, versus that of the full Hβ (Fig. 16). Red, cyan, and gray indicate data from the observing seasons of 2016, 2017, and 2018. Dashed lines show the identity ratios while those in dotted blue are fits to the data. Because of its greater variability, the horizontal scale for Hα is more extended.

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