Fig. 5
Upper panel: the raw spectrum (P.I. channel distribution; 1 PI ~ 10 eV) of a large number of blank fields (BF, in grey) compared with the spectrum registered in the NESR regions in black. Middle panel: the ratio NESR/BF gives the relative importance of the NXB as function of energy in absence of bright sources. Bottom panel: the 4 NESR spectra show not negligible differences.
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