\begin{table}%t1
\caption{\label{t1}Coordinates used as phase centers for the VLA observations, LSR velocities of the cloud and distances.}
\par
%\centerline
{
\begin{tabular}{cccrr}
\hline\hline
\noalign{\smallskip}
Source & $\alpha$ & $\delta$ & $V_{\rm LSR}$\tablefootmark{a} & $d$\tablefootmark{b} \\
       & (J2000) &  (J2000)  & (km s$^{-1}$) & (kpc) \\
\hline 
G12.22--0.12  & 18:12:39.81 & --18:24:16.8 & +27.0  & 16.1\tablefootmark{c} \\
G12.22--0.12M & 18:12:44.44 & --18:24:24.6 & +28.2  & 16.1\tablefootmark{c} \\
G14.17--0.06  & 18:16:26.00 & --16:39:56.2 & +38.3  & 2.5--13.0\tablefootmark{d} \\
G23.44--0.18  & 18:34:39.25 & --08:31:38.8 & +99.4  & 5.9\tablefootmark{e} \\
G31.24--0.11  & 18:48:45.08 & --01:33:12.8 & +21.8  & 1.7\tablefootmark{e} \\
G31.21--0.18  & 18:48:56.57 & --01:36:43.4 & --39.0 & 19.7\tablefootmark{e} \\
G31.28+0.06   & 18:48:11.91 & --01:26:38.5 & +108.6 & 8.5\tablefootmark{c} \\
G32.74--0.07  & 18:51:21.86 & --00:12:06.2 & +37.5  & 2.7\tablefootmark{e}\\
G35.03+0.35   & 18:54:00.65 &  +02:01:19.3 & +52.9  & 3.6\tablefootmark{e} \\
G35.20--0.74  & 18:58:12.98 &  +01:40:38.0 & +33.7  & 2.2\tablefootmark{f} \\ 
G35.20--1.74  & 19:01:45.69 &  +01:13:35.0 & +42.6  & 3.3\tablefootmark{f} \\
G43.89--0.38  & 19:14:26.17 &  +09:22:34.0 & +54.3  & 4.2\tablefootmark{g} \\
G48.61+0.02   & 19:20:31.19 &  +13:55:24.9 & +19.5  & 9.7\tablefootmark{e} \\
G50.32+0.68   & 19:21:27.56 &  +15:44:21.3 & +25.8  & 8.7\tablefootmark{g} \\
G75.78+0.34  & 20:21:44.11 &  +37:26:39.4 & --0.5  & 4.1\tablefootmark{g} \\
\hline
\end{tabular}}
\par
\tablefoot{\tablefoottext{a}{Based on the present single-dish survey for all sources but 
G14.17--0.06 (single-dish CS survey, Plume et~al. 1992), 
G31.21--0.18 (based on the H$_2$O maser emission pattern, Anglada et~al. 1996), 
G31.24--0.11 (present VLA data), and 
G50.32+0.68 (single-dish CS survey, Bronfman et~al. 1996).} 
\tablefoottext{b}{Whenever the near-far ambiguity is not resolved out both
values are reported.} 
\tablefoottext{c}{Walsh et~al. (\cite{walsh97}).} 
\tablefoottext{d}{Plume et~al. (\cite{plume}).} 
\tablefoottext{e}{Present work.} 
\tablefoottext{f}{Zhang et~al. (\cite{zhang}).} 
\tablefoottext{g}{Hofner \& Churchwell (\cite{hofner96}).}}
\end{table}