\begin{table}%t1
\par
\caption{\label{sample}Main properties of the sample galaxies and CO line detections (K km~s$^{-1}$) derived from the literature.}  %   15}
\small
%\centerline
{\begin{tabular}{llllll}
\hline\hline
Name            &     $D$ (Mpc)                 & 12 + Log(O/H) &   CO(1, 0)    &    CO(2, 1)    &  CO(3, 2)    \\
\hline\noalign{\smallskip}
He 2--10       &   9$^{\rm K9}$                   &  8.93$^{\rm K9}$   &    10.0 (40$\arcsec$)$^{\rm Ba}$, 4.85(55$\arcsec$)$^{\rm K5}$   & 17.3 (21$\arcsec$)$^{\rm Ba}$, 6.82 (27$\arcsec$)$^{\rm K5}$ &  36.8 (14$\farcs$5)$^{\rm Ba}$, 16.6 (22$\arcsec$)$^{\rm Me}$    \\
IC 745         & 16.3$^1$, 15.4$^{\rm Tu}$   &    8.9$^{\rm Sa}$      &   1.12 (22$\arcsec$)$^{\rm Sa}$  & 1.02 (12$\farcs$5)$^{\rm Sa}$    &    --              \\
NGC~4123  & 22.4$^{\rm We}$, 25.3$^{\rm Tu}$   &   9.05$^{\rm Ra}$  &     4.5 (35$\arcsec$)$^{\rm Go}$, 17.8 (22$\arcsec$)$^{\rm Kr}$    &  32.7 (12$\arcsec$)$^{\rm Kr}$     \\
NGC~4309  & 18.0$^{\rm Fo}$                     &                        &    3.01 (55$\arcsec$)$^{\rm Le}$   &                       &    --        \\
NGC~4385  &  33.5$^{\rm Tu}$               &   9.1$^{\rm Ma}$  &    6.2 (35$\arcsec$)$^{\rm Go}$, 6.8 (15$\arcsec$)$^{\rm De}$, 2.3 (44$\arcsec$)$^{\rm Tc}$ &            &  5.0 (14$\arcsec$)$^{\rm De}$  \\
NGC~4630  &  17.9$^{\rm Tu}$, 20$^{\rm Al}$               &                        &    4.45 (55$\arcsec$)$^{\rm Le}$, 3.86 (24$\arcsec$)$^{\rm Al}$   &  4.84 (11$\arcsec$)$^{\rm Al}$   &     \\
NGC~4701  &  20.5$^{\rm Tu}$               &                        &    4.85 (55$\arcsec$)$^{\rm Le}$, 2.90 (21$\arcsec$)$^{\rm Bo}$   &  3.02 (11$\arcsec$)$^{\rm Bo}$    &    \\
NGC~4713  &  17.9$^{\rm Tu}$               &  8.84$^{\rm Sk}$   &    3.61(55$\arcsec$)$^{\rm Le}$                     &                       &    \\  
NGC~5253  &   3.3$^{\rm Fe}$                &  8.14$^{\rm K9}$   &    0.72 (55$\arcsec$)$^{\rm Ty}$, 1.3 (44$\arcsec$)$^{\rm Wi}$   &                      &   3.39 (22$\arcsec$)$^{\rm Me}$  \\
\hline
\end{tabular}}
\medskip
(1) Distance assuming $H_0 = 70$~km~s$^{-1}$~Mpc$^{-1}$; 
(Al) Albrecht et~al. (\cite{Albrecht2004}) -- IRAM 30 m;   %  8
(Ba) Baas et~al. (\cite{Baas1994}) -- SEST 15 m;   %  19
(Bo) Boker et~al. (2003) -- IRAM 30 m;    %  9
(De) Devereux et~al. (\cite{Devereux1994}) -- NRO 45 m;   %  4
(Fe) Ferrarese et~al. (\cite{Ferrarese2000});   %  12
(Fo) Fouque et~al. (\cite{Fouque2001});     %   3
(Go) Gondhalekar et~al. (\cite{Gondhalekar1998}) -- OSO 20 m;  %  7
(K5) Kobulnicky et~al. (\cite{Kobulnicky1995}) -- NRAO 12 m;   % 21
(K9) Kobulnicky et~al. (\cite{Kobulnicky1999});       %  17
(Kr) Krugel et~al. (\cite{Krugel1990}) -- IRAM 30 m;   %  10
(Le) Leroy et~al. (\cite{Leroy2005}) -- NRAO 12 m;   %  16
(Ma) Mayya et~al. (\cite{Mayya2004});    %  23
(Me) Meier et~al. (\cite{Meier2001}) -- CSO 10.4 m;  % 11
(Ra) Raimann et~al. (\cite{Raimann2000});  %  22
(Sa) Sage et~al. (\cite{Sage1992}) -- IRAM 30 m;  % 5
(Sk) Skillman et~al. (\cite{Skillman1996});   %  13
(Tu) Tully (\cite{Tully1988});   % 18
(Tc) Tacconi et~al. (\cite{Tacconi1991}) -- SEST 15 m;   %  6
(Ty) Taylor et~al. (\cite{Taylor1998}) -- NRAO 12 m;   %  14
(We) Weiner et~al. (\cite{Weiner2001});    %  2
(Wi) Wiklind \& Henkel (\cite{Wiklind1989}) -- SEST 15 m. 
\end{table}