[Yb/Fe] abundances determined in this work (green) compared to previous work. The studies of halo stars are indicated in various shades of grey: Honda et al. (2004), Johnson (2002), François et al. (2007), Roederer et al. (2014a,b), and Sneden et al. (2009). The uncertainties for these works are typically 0.10-0.25 dex. The two open clusters in Böcek Topcu et al. (2019, 2020), namely NGC 752 and NGC 6940, are indicated in red and pink using their mean abundance and consist of 10 and 11 stars, respectively. The measured spread in [Yb/Fe] for these clusters is 0.05 and 0.08. The horizontal-branch stars in Afşar et al. (2018) are indicted in yellow.