\begin{table}%t1
\caption{Results of SMA observations at 1.1~mm.}\label{tab: results}
\par
%\centerline
 {\small\begin{tabular}{lccc}
 \hline \hline
 & IRS~63 & Elias~29 & Ridge \\
\hline\noalign{\smallskip}
$F_\nu$ (P)$^{a}$ [mJy~bm$^{-1}$]	& 459			& 47	& 31			\\
RA$^{a}$ [J2000]				& 16:31:35.65		& 16:27:09.42		& 16:27:09.48		\\
Dec$^{a}$ [J2000]			& --24:01:29.56		& --24:37:18.91		& --24:37:22.48		\\
rms$^{b}$ [mJy~bm$^{-1}$]		& 6			& 5			& 5			\\
\hline
\multicolumn{4}{l}{Circular Gaussian fits to all data}		\\
$F_\nu$ (G)$^{c}$ [mJy]		& 474	& 72& 28\\
{\it FWHM}$^{c}$ [arcsec]			& $0.55 \pm 0.08$	& $2.2 \pm 0.5$		& --			\\
\hline
\multicolumn{4}{l}{Circular Gaussian fits to data $\ge$16~k$\lambda$ (scales $<$13~arcsec)}		\\
$F_\nu$ (G)$^{c}$ [mJy]	& 480	& 57	& 27\\
{\it FWHM}$^{c}$ [arcsec]& $0.62 \pm 0.08$& $1.7 \pm 0.7$& --\\
\hline
\multicolumn{4}{l}{Line data}						\\
HCO$^+$$^{d}$ [K km~s$^{-1}$]& $3.1 \pm 0.3$& $23.7 \pm 2.5$& $23.5 \pm 2.5$\\
HCN$^{d}$ [K km~s$^{-1}$]& ${<}1.8$& ${<}3.8$& ${<}3.8$\\
\hline
\end{tabular}}
\medskip
 $^{a}$ Point source fit in the ($u, v$) plane.
\par
 $^{b}$ Calculated from the cleaned image.
\par
 $^{c}$ Circular Gaussian fit in the ($u, v$) plane.
\par
$^{d}$ Integrated intensities are from a $4 \times 4\arcsec$ square around the continuum emission.  The synthesised beam is $\sim$$4 \times 2.5\arcsec$. HCN was not detected; quoted values are 3$\sigma$ upper limits.
\end{table}