Uncertainty in our predicted v_los PDFs against the difference between the true value v_True and our predicted line-of-sight velocity v_max. True Disc stars are plotted in purple, downsampled by a factor of 1000, the true Halo stars that are determined to be likely Halo stars by our method (probability greater than 80%) in orange, and true Halo stars that are misdetermined to be likely disc stars in red, both downsampled by a factor of 2. The median line and shaded regions indicate the binned running median and 1σ and 2σ values of the total distribution, defined from the 16%−84% range. If the predictions are unbiased and the predicted PDF uncertainties accurate, the binned 1σ and 2σ values regions are expected to follow the value of their own corresponding bin, plotted in solid black and blue lines.