Full Tables 4, 5, 6, 7 and Fig. A.1 are available in electronic form at http://www.edpsciences.org.
Full Tables 3, 8, A.1 and A.3 are available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/412/57

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We search also for the effect of beam filling on $\log 2V_{\rm M}^{\sin i}$ . We found a very tiny effect $\delta (\log 2V_{\rm M}^{\sin i})= (0.0028 \pm 0.0013) \theta -(0.0024 \pm 0.0011)$ , ( $\theta$ is the angular resolution of the radiotelescope, as seen in Sect. 5) that had no practical effect on the final result. Further, this effect disappeared for large galaxies ( $\log D_{25}>1.5$ ) where it is supposed to be more significant. We thus decided, for simplicity, to neglect it.

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