[X/Fe] and [Fe/H] abundance density estimation comparison between UKS 1 (left green symbols) and GCs (right grey symbols), following the constraints outlined in Table 5 from Mészáros et al. (2020). Each violin representation indicates with horizontal lines the median and limits of the distribution. The corresponding number of stars with available abundances in our sample is marked in the bottom labels. The top label indicates the cluster mass from Baumgardt et al. (2019).