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Table 4

X-ray source catalogues used for cross-correlation and the used positional errors.

X-ray catalogue σ ccat X-ray catalogue σ ccat

PFH2005  ∗  DKG2004 0 .′′3
SPH2008  ∗  WNG2006 0 .′′3
SHP97  ∗  VG2007 0 .′′4
SHL2001  ∗  OBT2001 3′′
PFJ93  ∗  O2006 1′′
TF91  ∗  SBK2009 3′′+
Ka2002 0 .′′3 D2002 0 .′′5
KGP2002  ∗  TP2004 1′′
WGK2004 1′′+ ONB2010 1′′



* Indicates that the catalogue provides σccat values for each source individually;


value taken from indicated paper.


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