Fit of the PDF of the deprojected interdistances between pair members of the IGPC by a one parameter Hubble profile ∝(1 + r/a)⁻² (see Sect. 3.3). The statistical deprojection was performed from a r_p histogram with 40 intervals (bin of 0.025 Mpc), but the normalized PDF is given with an effective bin of 0.01 Mpc for comparison with the projected PDF. The fitted parameter is larger than for projected data (see Fig. 8), namely, a = (0.28 ± 0.02) Mpc.