\begin{table}%t3
\caption{\label{sest}H$^{13}$CO$^+$ (1--0) survey results from SEST.}
%\centering
\par
\begin{tabular}{l r r c c}
\hline\hline\noalign{\smallskip}
Object 
& \multicolumn{2}{c}{Positions\tablefootmark{a}} 
& $T_{\rm mb}$& $\Delta V$  \\
& \multicolumn{1}{c}{Obs} 
& \multicolumn{1}{c}{Det}     
&  (K)    & (km s$^{-1}$)\\
 \hline
HH~38  		&   11 	& 3 	& $0.28\pm0.05$	& $0.9\pm0.1$ \\
HH~43		&    4 	& 1 	& $0.21\pm0.04$ 	& $0.6\pm0.1$ \\
HH~47C		&   11 	& 0 	& $<$0.23		& \nodata \\
HH~49		&   22 	& 0 	& $<$0.19		& \nodata \\
HH~52-53		&    9 	& 0 	& $<$0.26		& \nodata \\
HH~54		&   12 	& 0 	& $<$0.22		& \nodata \\
HH~75		&    9 	& 0 	& $<$0.17		& \nodata \\ 
HH~77\tablefootmark{b}	&   9 	& 4 	& $0.34\pm0.04$ 	& $1.2 \pm0.1 $\\  
HH~240  		&   11 	&10 	& $0.45\pm0.06$	& $0.6\pm0.1$ \\
HH~272  		&    9 	& 5 	& $0.33\pm0.06$	& $0.8\pm0.1$ \\
\hline
\end{tabular}
\par
\tablefoot{\tablefoottext{a}{Obs: No. of positions observed, Det: No. of positions
with $\geq$3$\sigma$ detections.}     
\tablefoottext{b}{HH~77 has an additional weak, 2$\sigma$ detections, in other two positions.}}
\end{table}