Comparison between the recovered and true source coordinates for the sources in 100 simulated crowded field datacubes, expressed as the mean deviation in x- and y-direction relative to the FWHM of the PSF as a function of the position of each source, in units of the FoV size. Dashed vertical lines indicate the FoV edges. The median deviation along x and y is marked by a solid black line, the 68.3% and 95.4% percentiles of both distributions are indicated by the dotted and dashed black lines, respectively. A few outliers are out of the plotted range and indicated by upper limits.