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Fig. B.1.
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Count rates of thermally emitting INSs in eRASS1–4 (TM8, 0.2 − 1 keV). A chi-square test for constancy is formally rejected for 4XMM J022141.5−735632, RX J0420.0−5022, RX J0720.4−3125, RX J0806.4−4123, and RX J1308.6+2127. All rates are consistent within 2σ.
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