Results of the fitted shot-noise correction for the tanh-mark with (a, b) = (0.6, −0.5). The left panels present 1 + W_f while the right panel shows $w_f=(1+W_f){\overline{m}}_f^2$. Different colours in the upper panel refer to the mean over five Covmos realisations and errorbars correspond to the mean standard deviation over those five realisations. Depleted measurements were obtained by taking the mean over 100 realisations of depletions. The bottom panels show the relative differences of the corrected signal from the fit to the undepleted reference case. Different colours in the lower panels refer to different orders used in the polynomial fit and e.g. ‘3rd/2nd’ indicates that a third- and second-order polynomial fit was used for w_f and ${\overline{m}}_f$, respectively. The horizontal dashed lines in black corresponds to a relative difference of ±5% and the vertical dashed line in grey refers to the side length of one grid cell.