Top panel: graphical illustration of the number of acceptable spectral fits for the three models. The size of the circles scales with the number of spectra with acceptable fits. The number of sources with acceptable power-law, mekal, and black-body fits are 2722, 455, and 1769, respectively, while 1117, 79 and 119 sources have an acceptable (unique) fit with only one of the models. For more information see Sect. 7.4.4. Bottom panel: differential and integral distributions for sources with unique power-law, black-body, and mekal fits in blue, red, and green, respectively.
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