\begin{table}%tA.2
\caption{\label{tc18o}Gaussian fit to C$^{18}$O(2--1) spectra at peak coordinates\tablefootmark{\ast}.}
\par
%\centering
\par
\begin{tabular}{lcccc}
\hline \hline \noalign{\smallskip}
Source & $V_{\rm LSR}$ & $\it FWHM$ & $T_{\rm MB}$ & $\int T_{\rm MB} {\rm d}V$ \\
 & (km~s$^{-1}$) & (km~s$^{-1}$) & (K) & (K~km~s$^{-1}$) \\
\hline
05358+3543 & --16.7 (0.2) &    4.2 (0.5) &    2.9 (0.5) &   13.0 (1.3)\\  
G213.61--12.6 &   10.0 (0.1) &    2.7 (0.2) &    7.6 (0.6) &   21.6 (1.1)\\
G189.78+0.34 &    9.0 (0.1) &    3.0 (0.1) &    6.9 (0.4) &   22.1 (0.9)\\
G192.58--0.04 &    9.1 (0.1) &    2.9 (0.3) &    8.8 (0.7) &   27.0 (0.5)\\
G192.60--0.05 &    7.4 (0.1) &    3.3 (0.2) &    7.4 (0.6) &   25.9 (1.1)\\  
18151--1208\_2\tablefootmark{b} &   30.0 (0.4) &    3.5 (1.0) &    3.3 (1.3) &   12.5 (2.8)\\  
18151--1208\_3 &   30.4 (0.1) &    1.4 (0.1) &    10.5 (0.2) &    15.1 (1.2)\\
18151--1208\_1 &   33.6 (0.2) &    3.3 (0.4) &    9.8 (1.5) &   34.4 (3.4)\\
G18.15--0.28 &   55.2 (0.1) &    3.2 (0.1) &   13.4 (0.7) &   46.3 (1.3)\\
G18.18--0.30 &   50.1 (0.1) &    3.0 (0.2) &   10.0 (0.9) &   31.7 (1.6)\\ 
18223--1243 &   45.0 (0.1) &    3.0 (0.1) &   13.0 (0.9) &   40.8 (1.7)\\  
18228--1312 &   33.1 (0.1) &    4.2 (0.2) &    8.5 (0.6) &   37.5 (1.4)\\
G19.27+0.1M2 &   26.8 (0.1) &    2.3 (0.3) &    3.7 (0.6) &    9.1 (0.9)\\  
G19.27+0.1M1\tablefootmark{a} &   26.3 (0.2) &    1.7 (0.3) &    2.8 (0.8) &    5.2 (1.1)\\  
18236--1205 &   26.3 (0.1) &    3.3 (0.1) &    9.2 (0.5) &   32.6 (1.0)\\
18264--1152 &   43.8 (0.1) &    3.1 (0.4) &    7.7 (1.1) &   25.8 (2.5)\\
G23.60+0.0M1 &  106.0 (0.1) &    3.7 (0.3) &    6.6 (0.5) &   25.5 (1.5)\\
18316--0602 &   42.6 (0.1) &    4.8 (0.2) &    8.0 (0.6) &   41.3 (1.5)\\
G23.60+0.0M2 &   53.5 (0.1) &    2.9 (0.3) &    4.3 (0.6) &   13.2 (1.1)\\
18317--0513 &   41.7 (0.1) &    2.3 (0.1) &    9.9 (0.6) &   24.8 (1.0)\\  
G24.08+0.0M2 &   51.9 (0.3) &    1.9 (0.5) &    3.2 (1.2) &    6.4 (1.7)\\
G24.33+0.1M1 &  112.9 (0.1) &    3.5 (0.3) &    5.1 (0.7) &   19.1 (1.4)\\
G24.33+0.1M4\tablefootmark{c} &  114.0 (0.3) &    5.5 (0.7) &    2.6 (0.3) &    15.3 (1.8)\\  
G24.33+0.1M2 &  117.7 (0.2) &    3.8 (0.4) &    3.3 (0.6) &   13.2 (1.2)\\
G24.60+0.1M2\tablefootmark{c} &  114.6 (0.2) &    3.7 (0.6) &    4.1 (0.5) &   16.1 (2.2)\\  
G24.60+0.1M1 &   53.6 (0.1) &    2.8 (0.3) &    3.6 (0.4) &    10.6 (1.0)\\
G25.04--0.2M1 &   63.6 (0.1) &    2.2 (0.2) &    6.3 (0.4) &   14.8 (0.9)\\
G25.04--0.2M4\tablefootmark{a,b} &   62.9 (0.4) &    2.5 (1.0) &    2.7 (1.5) &    7.1 (2.5)\\  
G25.04--0.2M2 &   63.3 (0.1) &    2.5 (0.3) &    2.9 (0.4) &    7.7 (0.8)\\  
G28.28--0.35 &   48.2 (0.1) &    3.6 (0.1) &    7.6 (0.5) &   29.0 (1.0)\\
18507+0121 &   58.0 (0.2) &    6.0 (0.5) &    6.9 (1.4) &   43.4 (3.4)\\ 
G34.43+0.2M1 &   58.0 (0.3) &    4.8 (0.8) &    4.5 (1.2) &   23.3 (2.8)\\  
G34.43+0.2M3 &   58.5 (0.2) &    2.3 (0.6) &    4.1 (0.5) &    10.1 (2.1)\\  
G34.24+0.13 &   56.9 (0.1) &    2.6 (0.1) &   14.0 (0.5) &   38.4 (0.8)\\
18517+0437 &   44.1 (0.1) &    2.7 (0.3) &   10.4 (1.6) &   29.4 (2.7)\\
G34.77--0.6M2\tablefootmark{b,d} &   43.2 (0.7) &    6.2 (1.4) &    1.0 (0.5) &    6.4 (1.3)\\  
G35.39--0.3M4\tablefootmark{b} &   45.1 (0.2) &    1.3 (0.3) &    1.6 (0.2) &    2.2 (0.6)\\  
G38.95--0.5M1 &   42.2 (0.1) &    3.1 (0.2) &    5.7 (0.4) &   19.0 (0.8)\\
19035+0641 &   32.8 (0.2) &    5.7 (0.5) &    3.0 (0.4) &   18.0 (1.1)\\
19095+0930 &   43.9 (0.1) &    5.8 (0.2) &    8.8 (0.5) &   54.7 (1.4)\\
20216+4107 &   --1.4 (0.1) &    1.5 (0.2) &    7.0 (0.5) &   11.2 (1.0)\\
20332+4124 &   --2.6 (0.1) &    3.0 (0.3) &    6.9 (0.8) &   21.9 (1.6)\\
22134+5834 &  --18.3 (0.1) &    2.3 (0.1) &    7.2 (0.6) &   17.3 (0.9)\\ 
22570+5912\_2\tablefootmark{a,b} &  $-$48.5 (0.7) &    3.2 (1.7) &    1.9 (0.8) &    6.4 (2.1)\\  
22570+5912\_1 &  $-$45.7 (0.1) &    2.5 (0.3) &    4.7 (0.6) &   12.6 (1.0)\\
23033+5951 &  --53.6 (0.1) &    3.1 (0.2) &    6.4 (0.7) &   20.9 (1.4)\\
23139+5939 &  --44.1 (0.1) &    3.7 (0.2) &    4.7 (0.5) &   18.8 (1.0)\\
23151+5912 &  --54.6 (0.1) &    3.2 (0.3) &    5.5 (0.6) &   18.6 (1.2)\\
\hline
\end{tabular}
\tablefoot {\tablefoottext{\ast}{The errors are indicated in brackets;}
{$^{(a)}$}~{fit to spectrum at HCO$^{+}$(1--0) peak coordinates;}
{$^ {(b)}$}~{weak line and/or noisy spectrum: bad fit;}
{$^ {(c)}$}~{C$^{18}$O line outside VESPA unit limits: 1~MHz spectrum used;}
{$^ {(d)}$}~{fit to spectrum at offset coordinates ($-$13.3$''$,~$-$9.0$''$) (see HCO$^{+}$(1--0) and HCN(1--0) integrated maps in Fig.~\ref{fclump1}).}}
\end{table}