\begin{table}%t3
\caption{\label{tab:barstuff}Impact of bar class on CO abundance. }
%\centerline
{\scriptsize
\begin{tabular}{llcccccc}
\hline\hline\noalign{\smallskip}
(1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) \\
Database & Class & Total & Det. & Undet. & Mean \ione & $\sigma$(\ione) & median \mb \\
& & & & & [$\kkms$] & [$\kkms$]\\
\noalign{\smallskip}\hline\noalign{\smallskip}
    & unbarred (SA) & 16 &  7 &  9 & 1.13 & 0.83 & $-$17.3 \\
RC3 & mixed (SAB)   & 16 & 11 &  5 & 1.56 & 1.50 & $-$18.2 \\
    & barred (SB)   & 15 & 12 &  3 & 1.80 & 1.80 & $-$18.4 \\
    & full sample   & 47 & 30 & 17 & 1.49 & 1.42 & $-$17.8 \\ 
\noalign{\smallskip}
\hline 
\noalign{\smallskip}
     & unbarred	    & 12 &  7 &  5 & 1.30 & 0.90 & $-$17.3 \\
LEDA & barred       & 35 & 23 & 12 & 1.56 & 1.57 & $-$18.2 \\
     & full sample  & 47 & 30 & 17 & 1.49 & 1.42 & $-$17.8 \\ 
\hline
\end{tabular}}
\smallskip
Column~7: standard deviation of \ione\ values, including upper limits.
\end{table}