Quantiles of X-ray spectra. The dots indicate the quantities derived from source energy quantiles. The two grids show the same quantities derived from simulated spectra. The solid line grid refers to thermal spectra with N_H =  [10²⁰,10²¹,0.6 × 10²²,1.1 × 10²²,3.4 × 10²²,6 × 10²²]  cm^-2 and kT =  [0.3,0.5,1.1,2.3,4.0,10.0]  keV, and the dashed line grid to simulated power-law spectra typical of AGN, with the same N_H values and power-law indices Γ =  [0.0,0.4,1.0,1.6,2.0] .