Comparison between 685 associated Hi-GAL and ATLASGAL sources (Urquhart et al. 2018). Left: CDF of the absolute difference between the inferred and measured v_LSR velocities for the Hi-GAL and ATLASGAL catalogues, respectively. The dashed vertical line indicates the assumed linewidth for the Hi-GAL sources. Right: CDF of the absolute difference of reported distances for Hi-GAL and associated ATLASGAL sources. The vertical grey areas indicate distance bins of 0.5 kpc. The inset shows the corresponding confusion matrix for the KDA resolution.