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Table A.2.

Summary of detection thresholds for soft excesses. Column (1) gives the percentile of sources, and column (2) gives the corresponding Kpl values. Column (3) gives expected number of false detections. Column (4) gives the number of sources in the sample with Kpl values greater than the value given in column (2) and where the model provides the best fit to the data. Column (5) gives the assumed number of true detections in the eFEDS hard X-ray–selected sample of 200 sources.

(1) (2) (3) (4) (5)
Percentile K Expected Expected True detections
false detections Sources
95% 1.392 10 40 30
97.5% 2.586 5 29 24
99% 8.613 2 20 18

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