Distribution of the displacement in the image plane, in arcseconds, along the x and y axes between the observed and model-predicted positions of multiple images in the golden sample. The color of the points indicates the redshift of the objects. The histograms are the marginal distributions of the displacements, computed using ten bins of width 0.25″, and the solid black lines are their kernel density estimates. The displacement root mean square (RMS) is Δ_RMS = 0.75″.