Normalised A(Li) histogram of all stars in our data sample (soft blue colour bars) vs. predictions by our GCE models (solid and dashed lines), and relative errors (top panel). Dashed red lines show the results from our SFR_0b model, dashed blue lines from SFR_1b, and solid black lines from the SFR_2b model, which is the one that best reproduces the observed A(Li) distribution (see Sect. 3.2 for more information on the models). Bin numbers in all histograms have been obtained by applying the Freedman-Diaconis rule (Diaconis & Freedman 2004).