\begin{table}%t3
\par
\caption {\label{table:1}Properties of the IRDCs. For every cloud  
the first line corresponds to the total mass, the following to the masses 
of separate millimeter sources.} %title of Table
%\centerline
 {\begin{tabular}{r c c c c c c c c c c}        
\hline\hline             % inserts double horizontal lines
\noalign{\smallskip}
Name & RA & Dec. & $D$ & Peak Flux density & Integrated Flux density & Mass 1.2~mm & $N$ (1.2 mm)$^1$ &
$N_0$ (1.2 mm)$^2$ & Mass (8 $\mu$m) & $N$ (8 $\mu$m)\\ 
& (J2000.0) & (J2000.0) & (kpc)& (mJy) & (Jy) & ($ M_\odot$)&
(10$^{22}$ cm $^{-2}$) & (10$^{22}$ cm $^{-2}$) &($ M_\odot$) & (10$^{22}$ cm $^{-2}$) \\   
\noalign{\smallskip}   
\hline                        % inserts single horizontal line
\noalign{\smallskip}
IRDC 308.12$-$0.33 & 13 37 01.2 &$-$62 44 40 & 4.32& 225 & 1.88 & 580 & 1.7  &60.3& $\rm 520^{+40}_{-30}$  & $\rm 2.8^{+0.16}_{-0.16}$ \\[1.5mm]
IRDC 309.13$-$0.15 & 13 45 17.1 &$-$62 21 57 & 3.92& 330$^3$ & 4.39$^3$ & 1150$^3$& 2.6$^3$  & &$\rm 1750^{+370}_{-310}$& $\rm 3.0^{+0.13}_{-0.13}$ \\
P1 &  &  &  &  162 &  1.37 & 360& 1.3 & 41.9 & & \\	    
P2 &  &  &  &  124 &  0.96 & 250& 0.9 \\[1.5mm] 
IRDC 309.34$-$0.64 & 13 48 39.8 &$-$62 47 26 &3.46 & 504$^3$ & 3.69$^3$ & 750$^3$ & 3.9$^3$  & & $\rm 750^{+170}_{-150}$& $\rm 3.1^{+0.24}_{-0.24}$\\
P1 &  &  &  &  216 &  0.94 & 190& 1.7 & 48.5 & &\\
P2 &  &  &  &  155 &  0.81 & 170& 1.3 \\[1.5mm]
IRDC 310.39$-$0.28 & 13 56 01.7 &$-$62 14 27 & 4.93& 594 & 2.48 & 1029& 4.6  &186.1& $\rm 1320^{+60}_{-50}$ & $\rm 2.6^{+0.16}_{-0.16}$ \\[1.5mm]
IRDC 312.33$-$0.07 & 14 11 56.8 &$-$61 29 25 & 4.05& 288 & 0.77 & 210 & 2.3  &76.6& $\rm 290^{+100}_{-60}$ & $\rm 2.7^{+0.33}_{-0.16}$ \\
P1 &  &  &  &  288 &  0.46 & 130& 2.3 \\   
P2 &  &  &  &	92 &  0.31 & 90 & 0.7 \\[1.5mm]
IRDC 313.72$-$0.29 & 14 23 05.4 &$-$61 14 48 & 3.33& 172 & 1.98 &  370& 1.3  &35.7& $\rm 700^{+90}_{-70}$  & $\rm 4.1^{+0.16}_{-0.16}$ \\[1.5mm]
IRDC 316.45$-$0.66 & 14 44 50.4 &$-$60 30 54 & 3.01& 159 & 0.96 &  150& 1.3  &32.3& $\rm 430^{+80}_{-70}$  & $\rm 2.9^{+0.16}_{-0.16}$ \\
P1 &  &  &  &  159 &  0.58 & 90 & 1.3 \\[1.5mm]  
IRDC 317.71$+$0.11 & 14 51 07.5 &$-$59 16 11 & 2.9 & 954$^3$ & 8.00$^3$ & 1150$^3$ & 7.5$^3$  &       &$\rm 1320^{+150}_{-150}$& $\rm 3.6^{+0.15}_{-0.15}$ \\
P1 &  &  &  &  250 &  1.98 & 280& 2.0 & 47.9 & & \\[1.5mm]
IRDC 318.13$-$0.34 & 14 55 58.4 &$-$59 28 31 & 2.96& 142 & 2.48 &  370& 1.1  &26.9& $\rm 680^{+160}_{-140}$& $\rm 2.1^{+0.16}_{-0.16}$ \\
P1 &  &  &  &  142 &  1.02 & 150& 1.1 \\  
%P2 &  &  &  &  120 &  1.07 & 160& 0.9 \\[1.5mm]
IRDC 320.23$+$0.32 & 15 07 56.7 &$-$57 54 27 & 1.97& 186 & 1.68 &  110& 1.5  &24.6& $\rm 600^{+320}_{-250}$& $\rm 5.2^{+0.16}_{-0.16}$ \\
P1 &  &  &  &  142 &  1.00 & 70 & 1.1 \\  
P2 &  &  &  &  186 &  0.68 & 50 & 1.5 \\[1.5mm]
IRDC 321.71$+$0.07 & 15 18 26.7 &$-$57 21 56 & 2.14& 408 & 3.12 &  240& 3.2  &56.9& 460 $\rm ^{+80}_{-80}$ & $\rm 5.4^{+0.16}_{-0.23}$ \\
P1 &  &  &  &  276 &  1.69 & 130& 2.2 \\  
P2 &  &  &  &  408 &  1.43 & 110& 3.2 \\[1.5mm]
IRDC 013.84$-$0.49 & 18 17 21.2 &$-$17 09 23 & 2.66& 438 & 9.38 & 1130& 3.5   &77.0&$\rm1150^{+130}_{-120}$& $\rm 3.3^{+0.13}_{-0.13}$\\
P1 &  &  &  &  214 &  2.97 & 360& 1.6 \\
P2 &  &  &  &  163 &  1.12 & 130& 1.3 \\
P3 &  &  &  &  192 &  1.45 & 170& 1.5 \\  
P4 &  &  &  &  438 &  3.54 & 430& 3.5 \\
\hline                                   
\end{tabular}}
\par
\smallskip
\par
$^1$ Peak column density per beam.
\par
$^2$ Extrapolated column density, obtained by applying the correction factor explained in Sect.~\ref{Sect:high-comp}
\par
$^3$ This mm peak corresponds to a mid-infrared bright source near to the IRDC.
\par
\end{table}