Comparison of the effect of different masks. For the galaxy clusters without estimated radius in the Planck PSZ2 catalogue with z <  0.4, regions defined by areas of 0, 5, and 10 arcmin radii are masked. No difference is noticed and all plots are overlapping. To clearly see the different profiles, we added +0.1 and +0.2 to the y-axis for the orange line and the green line, respectively. We therefore chose to mask at 5 arcmin.