Upper panels: distribution of values of α as a function of the minimum S/N between the pair of velocities compared. In red, we show the values before the uncertainty correction and in blue after it, as indicated in the label. Left panel: CC velocities and uncertainties. Right panel: MLM velocities and uncertainties. Lower panels: sMAD of the α parameter distribution at different bins of S/N. In red, we show the values before the uncertainty correction and in blue after it, as indicated in the label. Left panel: CC velocities and uncertainties. Right panel: MLM velocities and uncertainties.