Flux ratio between the ALMA and single-dish sources as a function of the original single-dish flux. The ALMA flux have been scaled to 870 μm and 1.1 mm to match the LABOCA (black) and AzTEC (red) sources. The numbers adjacent to the black dots correspond to the IDs of DKB sources as identified in Dannerbauer et al. (2014). The dashed and dotted lines show the median of the flux ratios, together with the scatters marked by the shaded regions.