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Table 2.

Information of each XMM-Newton observation of Q2237+030.

ObsID Date Exposure Cleaned exposure Net counts Net CR
XMM 2002 0110960101 2002-05-28 42.87 23.53 3837  ±  62 16.3  ±  0.3
XMM 2016 0781210201 2016-11-26 24.90 6.58 683  ±  26 10.4  ±  0.4
XMM 2018 0823730101 2018-05-19 141.60 108.00 6569  ±  81 6.0  ±  0.1

Notes. The exposure time and the cleaned exposure are given in units of kiloseconds. The source net (i.e., background-subtracted) counts and CRs are referred to the EPIC-pn spectra in the 0.3–10 keV observed-energy band. The net CR is given in units of 10−2 cts s−1.

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