Behaviour of A(Li) as a function of [Fe/H] (left and middle panels) and age (right panel) in the solar neighbourhood, for the thick- (left) and thin-disc components (middle and right panels). Lithium measurements for high- and low-α field stars in GES iDR6 are shown (red and blue circles, respectively), together with upper limits (grey dots). Cluster data are shown with brown shades for the younger clusters and yellow tones for the older ones. Only clusters and stars with 7 < R_GC/kpc < 9 are considered for the comparison with the solar neighbourhood models. The meteoritic abundance from Lodders et al. (2009) is indicated with the multiplication sign. The predictions of the parallel GCE model are highlighted with different colours depending on the assumptions made about ⁷Li synthesis and cosmological lithium abundance. We also show data for metal-rich α-rich stars (magenta circles) and super metal-rich solar-α stars (light blue circles) found in the solar neighbourhood. These are not to be compared with the predictions of solar neighbourhood models and are used only for discussion purposes (see text). Empty circles are stars that lack an [α/Fe] determination in GES iDR6; we assign most of them to the thin-disc component, based on their kinematics (see Sect. 4.5).