APOGEE DR17 chemical abundance ratio distributions of the bulge field and Ter5 stars from dataset #2 (see Sect. 3.2). Left panels: [Si/Fe], [Ca/Fe], [Mg/Fe], and [O/Fe], and the average [α/Fe]) trends with [Fe/H] of the bulge field (grey dots) and Ter5 (black stars and red triangles) stars. Black stars refer to Ter5 members within the tidal radius of 4.6′ quoted by Lanzoni et al. (2010), while red triangles mark stars outside 4.6′ and within the Jacobi radius of 25.4′ quoted by Taylor et al. (2022). The black stars circled in red are in common with Taylor et al. (2022). The running LOWESS median curves at 95% confidence (thick green lines) and 1, 2, 3σ shaded regions are also plotted, together with the typical measurement error bars. Right panels: corresponding distributions of the differences with the LOWESS median curve ones.