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Fig. 1.


Cluster density distribution as a function of redshift for the CLASSIX galaxy clusters covering the sky at |bII| ≥ 20° for a minimum luminosity of 1042 erg s−1 (0.1–2.4 keV). The density distribution has been normalised by the expected cluster density based on the average luminosity function as explained in Sect. 3. The open square shows the result if the region of the Virgo cluster is excluded from the analysis.

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