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Fig. 2

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Comparison between fraction of family members with the 0.7 μm band absorption (Qhyd) from spectroscopic studies (Mothé-Diniz et al. 2005; Morate et al. 2016, 2018, 2019, 2021; de León et al. 2016; De Prá et al. 2020b; De Prá et al. 2020a) and the HYD value calculated from the SDSS data. Filled circles indicate more than 20 family members and open circles indicate fewer than 20 family members.

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