Positional and wideband flux density accuracy of the GLEAM survey with respect to the reference, which is the NVSS (left panels) and SUMSS (right panels) for position and the value predicted by the composite spectrum from SPECFIND for the flux density. Upper panel: flux density, middle panel: position offset in right ascension, lower panel: position offset in declination. Right hand panels: solid line: observations, dashed line: fitted Gaussian. The corresponding plots for the other catalogs can be found at the CDS. The catalogs are sorted by ascending frequency.