Comparison between the abundances derived by Arcetri with those derived by other nodes as a function of T_eff, for stars observed with Giraffe. The plotted differences ∆A(Li) are computed as the other node minus Arcetri, and are colour-coded by the Arcetri abundance. Only stars with detections in both nodes are plotted. The 3-σ clipped average and standard deviation of the abundance differences are indicated in the respective panels.