Continuous absorption measure distribution plotted as ξA(ξ) for Mrk 509. Shown is the median of the 117 runs with . Error bars correspond to the minimum and maximum value of the AMD at each value of ξ for those runs with acceptable χ². Note the two strong and isolated peaks at log ξ = 2.0 and 2.8, respectively. The inset shows our results on a logarithmic scale for a broader range of ionization parameter; dotted lines connect the minimum and maximum values of all acceptable solutions.