\begin{table}%t4
\caption{\label{4:tab:res2ahco}HCO$^+$ and H$^{13}$CO$^+$ results. }
%\centerline
 {\small \begin{tabular}{l l l l l l }
\hline \hline
Source & \multicolumn{2}{c}{HCO$^+$ 4--3}  & \multicolumn{2}{c}{H$^{13}$CO$^+$ 4--3} & $V_{\rm LSR}^a$  \\
& $\int T_{\rm MB} {\rm d} V^b$ & $T_{\rm MB}$ & $\int T_{\rm MB} {\rm d}V^b$ & $T_{\rm{MB}}$  \\  
& (K~km~s$^{-1}$) & (K) & (K~km~s$^{-1}$) & (K) & (km s$^{-1}$)\\
\hline
\multicolumn{5}{c}{Chamaeleon} \\
%\hline
Ced 110 IRS 4  & 4.0 & 3.1 &  0.38 & 0.25 & 4.3\\
Ced 110 IRS 6  & 0.5 & 0.4 &  $<$0.06 & -- & 4.8\\
Cha IRS 6a     & $<$0.2 & --  & $<$0.06 & -- & 4.6\\
Cha IRN        & 0.87 & 0.95 &  $<$0.06 & -- & 4.5 \\
Cha INa 2      & $<$0.2 &-- & $<$0.06 & -- & 4.8\\
\hline
\multicolumn{5}{c}{Corona australis} \\
%\hline
CrA IRAS 32 &  4.1 & 2.9 &  0.72 & 0.53& 5.6 \\
HH 100-off &  4.8 & 3.2 & $<$0.06 & -- & 5.9\\
RCrA IRS 5 &  14.2 & 7.0 &  0.96 & 0.86& 5.7\\
RCrA IRS 7A &  63.7 & 17.4 &  3.8 & 1.6& 5.5\\
RCrA IRS 7B &  49.0 & 18.7 &  3.8 & 2.2& 5.7\\
RCrA TS 3.5 &  $<$0.2 & -- &  $<$0.06 & --& 5.9\\
\hline
\multicolumn{5}{c}{Isolated} \\
%\hline
HH 46 &  8.4 & 5.4 &  1.1& 1.0 & 5.3\\
IRAS 07178-4429 &  1.0 & 0.6 &  $<$0.08 & -- & 3.4\\
IRAS 12496-7650 &  1.9 & 1.5 &  $<$0.06 & -- & 1.9\\
IRAS 13546-3941 & $<$0.12 & --  & $<$0.06 & --& --5.7\\
IRAS 15398-3359$^c$ &  5.9  & 4.6 & -- & --& 5.2\\
\hline
\end{tabular}}
\medskip
$^a$ The rest velocity $V_{\rm LSR}$ was determined by fitting Gaussians to either the H$^{13}$CO$^+$ 4--3 (preferred) or C$^{18}$O 3--2 lines (see Table~\ref{4:tab:res2aco}); $^b$ calibration uncertainties estimated at 20$\%$ dominate the uncertainty of the integrated intensity; $^c$ data from HARP-B map.
\end{table}