Comparison of the cumulative distribution functions of [Mg/Fe], [Ca/Fe] and [Y/Fe] for Sequoia and GES stars (brown and green lines, respectively) in the common metallicity range (−2.60 < [Fe/H] < −1.20 dex) shown at the top. We report the probability that the two distributions are drawn from the same parent sample according to a Kolmogorov-Smirnov test. Bottom panel is the same as the top, but for Antaeus and GES stars (blue and green lines, respectively) in the common metallicity range (−2.60 < [Fe/H] < −1.45 dex).