\begin{table}%T1
\caption{\label{tab_av_1806}Derived parameters for each of the molecular clouds along the line of sight of~\lbv \ and~\sgr,
using the \co\ spectra.}
%\centerline
{
\begin{tabular}{lcccccc}
\hline
\hline
Name  &  $W$(CO*)$^a$  & $V_{\rm lsr}$$^b$
                            &  $A_{\rm V}$    &  Near distance$^b$ & Far distance$^b$ & Distance$^b$ \\
      & (K~\kms)  &  (\kms) &  (mag)  &       (kpc)   &   (kpc)     &   (kpc)  \\
\hline
MC --16  & 28.4  & --14.9 & 8.6 $\pm$ 1.7 &   n.a.     &   24.9    &  4.5    \\
MC 4     & 12.7  &    4.3 & 3.9 $\pm$ 0.8 &    0.2      &  16.6     &  0.2    \\
MC 13A & 32.8  &   12.7 & 10.0 $\pm$ 2.0 &   1.7      &  15.1    &   15.1  \\
MC 13B & 9.8   &   16.7 & 3.0  $\pm$ 0.6 &   2.2      &  14.5    &   4.5   \\
MC 24    & 18.3  &   23.6 & 5.6 $\pm$ 1.1 &    3.0     &   13.8   &    3.0   \\
MC 30    & 2.6   &   30.0 & 0.8 $\pm$ 0.2 &    3.5     &   13.2   &    3.5   \\
MC 38    & 3.6   &   38.4 & 1.1 $\pm$ 0.2 &    4.2     &   12.6   &    4.2  \\
MC 44    & 5.0   &   43.5 & 1.6 $\pm$ 0.3 &    4.5     &   12.3   &    4.5  \\
MC 73    & 19.8  &   73.4 & 6.0 $\pm$ 1.2 &    5.7     &   11.0   &    ...$^c$  \\
MC 87    & 4.5   &   87.9 & 1.4 $\pm$ 0.3 &    6.1     &   10.6   &    ...$^c$  \\
MC 94    & 1.7   &   94.2 & 0.5 $\pm$ 0.1 &    6.2     &   10.5   &    ...$^c$   \\
\hline
\end{tabular}}
\smallskip
$^a$ $W$(CO*) is the integrated line area of the cloud. The error on $W$(CO*) itself is negligeable compared 
to the 20\% uncertainty we assume to take into account the uncertainties in the various
conversion factors for $A_{\rm V}$.\\
 $^b$ In the text, we use a systematic error of~$\pm$10~\kms\
on the velocity of the cloud in order to derive a robust distance range ($>$2$\sigma$) for each of the molecular clouds. \\
$^c$   We did not
attempt to resolve the distance ambiguity for MC~73, MC~87 and MC~94, 
since they are between~MC~--16 and~MC~13A in either case.
\end{table}