\begin{table}%t5
\caption{\label{t:FlowVel}Flow velocities, column densities, and mass fluxes}
\par
%\centering
\small
\begin{tabular}{lrrrrrrrrrrr}
\hline\hline\noalign{\smallskip}
Source & $\Delta V_{\rm r}$ & $\sigma^2$ & $T$(BD) & $T$(D) & $T$(RD) &\makebox[2em][c]{$V_{\rm R}$} &\makebox[2em][c]{$V_{\rm B}$} 
       &\makebox[5em][c]{$V_{\rm flow}$}&\makebox[4em][c]{$R$$^a$} & $N$(H$_2$)$^b$ &\makebox[6em][c]{${\rm d}M/{\rm d}t$}  \\
 &  \km &  \km & K & K & K &\makebox[2em][c]{\km} &\makebox[2em][c]{\km} &\makebox[5em][c]{\km} &\makebox[4em][c]{pc} 
        &\makebox[3em][c]{cm$^{-2}$} &\makebox[6em][c]{\Msunperyear}	\\
\hline\noalign{\smallskip}
SgrB2MC	& 14.7&38.8&11.9 &--2.9	&12.5	&85.7	&50.9	&$-0.06\pm .02$ &---             &\dex{2.8}{23}& ---     \\
G10.62 	& 7.1 &9.2 &14.0 &6.7	&2.2 	&3.7	&--5.2	&$1.3  \pm .02$ &$0.28 \pm .01	$&\dex{1.4}{23}&\dex{(6.0\pm3.1) }{-3} \\
G28.20N	& 9.3 &15.8&1.9  &1.8	&1.8 	&45.6	&37.3	&$0.11 \pm .11$ &$0.26 \pm .01	$&\dex{6.4}{23}&\dex{(2.2\pm2.4) }{-3} \\
G31.41 	& 5.9 &6.3 &4.6  &--0.4	&3.1 	&102.6	&94.1	&$0.30 \pm .07$ &$0.28 \pm .01	$&\dex{2.2}{23}&\dex{(2.2\pm1.2) }{-3} \\
G32.80 	& 7.5 &10.1&4.3  &3.6	&4.0	&49.0	&41.5	&$0.08 \pm .04$ &$0.54 \pm .03	$&\dex{2.6}{23}&\dex{(1.3\pm1.0) }{-3} \\
G33.13 	& 5.2 &4.8 &0.6  &0.7	&1.0 	&78.1	&73.6	&$-0.35\pm .16$ &$0.28 \pm .01	$&\dex{4.2}{23}&\dex{(-4.8\pm3.3) }{-3} \\
G34.26 	& 5.4 &5.2 &14.0 &1.0	&4.4 	&63.0	&56.1	&$0.83 \pm .15$ &$0.21 \pm .01	$&\dex{1.1}{23}&\dex{(2.3\pm1.2) }{-3} \\
G35.20 	& 4.2 &3.2 &1.0  &4.3	&2.5 	&44.7	&42.2	&$-0.56\pm .15$ &$0.19 \pm .01	$&\dex{2.1}{23}&\dex{(-2.6\pm1.5) }{-3} \\
G43.89 	& 3.5 &2.2 &1.3  &1.0	&0.3 	&56.9	&52.6	&$0.47 \pm .16$ &$0.21 \pm .01  $&\dex{2.2}{23}&\dex{(2.6\pm1.6) }{-3} \\
W51D   	& 7.7 &10.8&1.9  &0.8	&10.8	&59.9	&49.0	&$-1.6 \pm .30$ &$0.31 \pm .02	$&\dex{2.1}{23}&\dex{(-1.2\pm0.7) }{-2} \\
G81.67	& 6.9 &8.6 &9.9	 &2.3	&5.0	&1.4	&--5.7	&$0.74 \pm .16$ &$0.20 \pm .02	$&\dex{1.7}{23}&\dex{(3.0\pm1.7) }{-3} \\
G81.68	& 2.1 &0.8 &1.2  &3.2	&0.5	&0.4	&--5.4	&$0.05 \pm .02$ &$0.10 \pm .01	$&\dex{5.3}{22}&\dex{(3.1\pm2.0) }{-5} \\ 
G45.07	& 7.2 &9.4 &0.2	 &2.1	&4.3	&59.4	&53.2	&$-2.5 \pm .50$ &$0.28 \pm .01  $&\dex{3.0}{23}&\dex{(-2.5\pm1.3) }{-2}\\[1ex]
\hline
\end{tabular}
\tablefoot{\tablefoottext{a}{Source size, typical uncertainty of 0.1~pc;}
\tablefoottext{b}{from Table~\ref{t:ColDensMasses}; a conservative uncertainty of 50\% is adopted (see text).}}
\end{table}