**Table 2:** Emissivities (2-10 keV) of different types of low-luminosity objects ( $L_{\rm 2-10~keV}<10^{42}$ erg s^-1) in the local Universe in units of 10³⁸ h₇₅ erg s^-1 Mpc^-3.
Class	${\rm d}L/{\rm d}V$
LLAGN	$\sim$ 3
Clusters of galaxies	$\la$ 0.1
Starforming galaxies (HMXBs)	0.2-0.3
Normal galaxies (LMXBs)	0.2-0.4
Sum of the above	$\sim$ 4
This paper, $(\log L_{\rm 2-10~keV}\la42)$	$4.4\pm3.9$

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