\begin{table}%t5
 \caption{\label{gaussfitNE}Fit of the NE~opacity profiles.} 
\small%\centerline
{\begin{tabular}{ccccc}
\hline \hline\noalign{\smallskip}
Line            & $V_0$ & $\tau$ & $\Delta V_{1/2}$ & $\int \tau{\rm d}V$ \\
    & (km~s$^{-1}$)& & (km~s$^{-1}$) & (km~s$^{-1}$) \\
\hline
HCO$^+$ (1--2) & $-$147.2 & 0.35 & 14.7 & 5.5 (0.05) \\
HCN (1--2)     & $-$146.4 & 0.28 & 11.6 & 3.5 (0.2) \\
HNC (1--2)     & $-$146.0 & 0.07 & 14.1 & 1.1 (0.05)\\
CS (3--4)      & $-$146.4 $^\dagger$ & 0.02 & 11.6 $^\dagger$ & 0.28 (0.08) \\
H$^{13}$CO$^+$ (1--2)  & -- & (0.007) & 14.7 $^\dagger$ & $\leq$0.12 \\
\hline
\end{tabular}} 
\smallskip
$^\dagger$ Fixed parameter.
\end{table}