\begin{table}%T9
\caption{\label{table:separations}Statistics of the clump-separation distributions in IRDCs.}
\small
%\centering

\begin{tabular}{c c c c c c c c c c c}
\hline\hline \noalign{\smallskip}
       &     &      & & \multicolumn{2}{c}{\textbf{Observed distribution}} & \multicolumn{2}{c}{\textbf{Random distribution}}\\ 
Name MSXDC & $N_{\rm cl}$ & $d$ & Area & $\langle r \rangle_{\rm obs}$ & $\tilde{r}_{\rm obs}$ & $\langle r \rangle_{\rm ran}$ & $\tilde{r}_{\rm ran}$ & $\langle r \rangle_{\rm obs}/\langle r \rangle_{\rm ran}$ & $\tilde{r}_{\rm obs}/\tilde{r}_{\rm ran}$ & Prob.\\ 
  & & [kpc] & [$\Box \arcmin$] & [$\log$ AU] & [$\log$ AU] & [$\log$ AU] & [$\log$ AU] & & & \\  
\hline
G304.74+01.32 & 12 & 2.4 & 29.8 & $5.690\pm0.041$ & 5.759 & $5.674\pm0.061$ & $5.738\pm0.084$ & $1.04\pm0.18$ & $1.05\pm0.20$ & 1.000\\
G048.65-00.29 & 14\tablefootmark{a} & 2.5 & 13.5 & $5.482\pm0.035$ & 5.524 & $5.449\pm0.059$ & $5.497\pm0.071$ & $1.08\pm0.17$ & $1.06\pm0.17$ & 0.709\\
G035.39-00.33 & 7 & 2.9 & 17.2 & $5.422\pm0.058$ & 5.493 & $5.583\pm0.095$ & $5.630\pm0.117$ & $0.69\pm0.18$ & $0.73\pm0.20$ & 0.156\\
G034.43+00.24 & 9 & 3.7 & 12.6 & $5.608\pm0.051$ & 5.672 & $5.618\pm0.075$ & $5.670\pm0.096$ & $0.98\pm0.21$ & $1.00\pm0.22$ & 1.000\\
G033.69-00.01 & 11 & 7.1 & 28.7 & $6.089\pm0.044$ & 6.152 & $6.076\pm0.062$ & $6.123\pm0.083$ & $1.03\pm0.18$ & $1.05\pm0.20$ & 0.982\\
G031.97+00.07 & 9 & 6.9 & 18.1 & $5.861\pm0.051$ & 5.870 & $5.943\pm0.073$ & $5.995\pm0.088$ & $0.83\pm0.17$ & $0.75\pm0.15$ & 0.738\\
G028.53-00.25 & 10 & 5.7 & 17.6 & $5.733\pm0.042$ & 5.797 & $5.822\pm0.060$ & $5.879\pm0.070$ & $0.81\pm0.14$ & $0.83\pm0.13$ & 0.753\\
G028.37+00.07 & 11 & 5.0 & 51.5 & $5.903\pm0.033$ & 5.934 & $5.977\pm0.055$ & $6.044\pm0.065$ & $0.84\pm0.13$ & $0.78\pm0.12$ & 0.324\\
G024.33+00.11 & 8 & 3.8 & 27.5 & $5.772\pm0.061$ & 5.926 & $5.727\pm0.073$ & $5.789\pm0.085$ & $1.11\pm0.24$ & $1.37\pm0.27$ & 0.152\\
G023.60+00.00 & 6 & 3.9 & 7.9 & $5.506\pm0.048$ & 5.480 & $5.491\pm0.099$ & $5.542\pm0.114$ & $1.04\pm0.26$ & $0.87\pm0.23$ & 0.822\\
\hline 
\end{tabular} 
\tablefoot{\tablefootmark{a}{Number of YSOs.}}
\end{table}