Confidence levels obtained with the maximum likelihood approach for the size distribution on the magnitude interval 25.6 ≤ J ≤ 26.6. The best fit is indicated by the magenta point while the green, blue, and red regions define the uncertainties at 68%, 95%, and 99.7% (1, 2, and 3 sigma) confidence level, respectively. The σ_Rh is basically unconstrained, while the parameter Rh_mode is well constrained between 0.14 and 0.22 arcsec at 1 sigma.