\begin{table}%t1
\caption{\label{tab:abund}}
%\centerline
$$
{\begin{tabular}{r@{,~}lccccc}
\hline\hline
\noalign{\smallskip}
\multicolumn{2}{c}{Position} & $V$ & $\delta V$ & $N$(ND$_2$H)$^1$ & $N$(ND$_3$)$^2$ & $N$(H$_2$)$^3$ \\
\multicolumn{2}{c}{(arcsec)} & km~s$^{-1}$ & km~s$^{-1}$ & 10$^{13}$ cm$^{-2}$ & 
10$^{12}$ cm$^{-2}$ & 10$^{22}$ cm$^{-2}$\\
\hline
--10 & 10 & $3.63 \pm 0.02$ & $0.33  \pm 0.03 $ & $9.8 \pm 2$  & &$4.1 \pm .5$\\
10 & 0 & $3.53 \pm 0.02$ & $0.20  \pm 0.07 $ & $3.6 \pm 1$  & &$3.1 \pm .5$\\
0 & 0 & $3.56 \pm 0.02$ & $0.40  \pm 0.05 $ & $12.7 \pm 2$ & 1.5 & $5.1 \pm .5$\\
--10 & 0 & $3.62 \pm 0.02$ & $0.39  \pm 0.05 $ & $10.0 \pm 2$  & & $5.9 \pm .5$\\
--20 & 0 & $3.75 \pm 0.1$ & $0.8 \pm 0.3 $ & $8.9 \pm 2$& &$5.4 \pm .5$\\
0 & --10 & $3.60 \pm 0.02$ & $0.30 \pm 0.05 $ &  $15.8 \pm 2$ & & $5.8 \pm .5$\\
--10 & --10 & $3.70 \pm 0.05$ & $0.55  \pm 0.1 $ & $11.7\pm 2$  & 1.8 & 
$7.1 \pm .5$\\
--20 & --10 & $3.55 \pm 0.02$ & $0.26 \pm 0.05 $ & $4.6 \pm 1$& &$5.7 \pm .5$\\
0 & --20 & $3.69 \pm 0.02$ & $0.45 \pm 0.06 $ & $12.7 \pm 2$& 2.6 &$5.2 \pm .5$\\
--10 & --20 & $3.72 \pm 0.03$ & $0.58  \pm 0.08 $ & $8.9 \pm 2$  & &$6.5 \pm .5$\\
\hline
\end{tabular}}
$$

$^1$ Derived assuming LTE and $T_{\rm ex} = 5$~K. $^2$ Roueff et~al. (\cite{Roueff05}).\\ $^3$ Derived assuming
$T_{\rm dust} = 16$~K and $\kappa_{350} = 0.07$~cm$^{2}$~g$^{-1}$.
\end{table}