Source number density profiles after correction for the impact of source obscuration and magnification, scaled to the corresponding mean value of the three outermost annuli. The increase over the baseline is a direct measure of the boost factor that we need to apply to compensate for cluster member contamination. We show an exponential model fit as dashed (22.0 < I_E < 24.5) and dotted (24.5 < I_E < 26.5) curves.