Relative difference between various estimates of ΔΣgm, based on different assumptions for source and lens redshifts, and the fiducial estimate in the data at 0.5 <z < 0.7. The quantity shown in the figure is as a function of the projected separation rp. The fiducial estimate is that obtained by using Eq. (13), which includes the individual redshift probability distribution function ps(z) of the sources, and for the lenses, the VIPERS spectroscopic redshift (zspec) when available or the CFHTLenS maximum likelihood photometric redshift (zphot) otherwise (see text). It corresponds to the adopted estimate for the analysis. The grey shaded area represents the relative statistical error expected in the survey.
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