Fig. 8
EPIC counts spectra, together with residuals in units of standard deviations for sources No. 9 (top-left panel), No. 23 (top-right panel; PN: black; MOS2: red), No. 54 (bottom-left panel; PN: black; MOS1: red; MOS2: green), and No. 63 (bottom-right panel; MOS1: black; MOS2: red).
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