Relative error of the weighted correlation function in Covmos. The mark is set to the tanh with parameters fixed to (a, b) = (0.6, −0.5) for the solid line and the toy model for the dashed line. Green colours refer to the correction using 30 realisations of depletions and blue colours indicate the undepleted case. The relative error is computed as the mean standard deviation over five realisations divided by the mean.