Histograms showing the distribution of the method-to-method dispersion of the atmospheric parameters of the 1517 results obtained in iDR2 (some stars have multiple results, as single exposure spectra were analyzed sometimes). The dispersion is only computed if at least three Nodes provided results for that given star. Left: the dispersion of T_eff. Center: the dispersion of log g. Right: the dispersion of [Fe/H].