Comparison of 82 clusters’ [Fe/H] to literature results with high-resolution spectra (HRS) in the left panel, and of 206 clusters to results from Zhong et al. (2020). The X symbols mark [Fe/H] values with less than three member stars, namely 38 clusters on the left (from HRS) and 75 clusters on the right (from Zhong et al. 2020). The open squares mark clusters with less than three FLAG=12 member stars from this work, which are 23 clusters on the left panel and 92 clusters on the right panel.