Top: overall histogram of the distances of 150 targets resampled 5000 times (750 000 in total, shown in black). d⁻² scaled histogram (red). A Gaussian centered at R₀ is displayed. The estimate of R₀ is labeled with its uncertainty as derived by using percentiles, as described in the text. Bottom: d⁻² scaled histogram of 75 targets at l < 0° resampled 5000 times (375 000 in total, shown in blue). Light blue: same as the blue, but for targets at l > 0°.