Fraction of obscured z ∼ 1.2 AGN as a function of intrinsic 2–10 keV luminosity. The purple triangles show the observed obscured fractions derived using the nominal N_H value derived from the fit. The gold circles are the values obtained using the probability distribution of N_H. The second set of points is shifted by 0.05 on the log(L) axis for visual clarity. The 1-σ uncertainties, derived with the bootstrapping procedure, are shown. This figure highlights the relevance of using the probability distributions in deriving the obscured fraction of AGN. These results are still not corrected for the survey sky coverage (for those, see Fig. 11). Left: obscured fraction derived using N_H > 10²² cm⁻² as the threshold (f₂₂). Right: obscured fraction derived using N_H > 10²³ cm⁻² as the threshold (f₂₃).