\begin{table}%T8
\caption{\label{table:KS}K-S test results between different IRDC clump mass \mbox{distributions}.}
\small%\centering

\begin{tabular}{c c c c}
\hline\hline \noalign{\smallskip}
 & Number of &  & \\  
Study & cold clumps & $D_{\max}$ & Prob.\\
\hline
Ragan et~al. (2009, RBG09)\tablefootmark{a} & 345 & 0.153 & 0.998\\ 
Rathborne et~al. (2006, RJS06)\tablefootmark{a} & 140 & 0.272 & 0.739\\
Sridharan et~al. (2005) & 28 & 0.359 & 0.534\\
Vasyunina et~al. (2009) & 17 & 0.449 & 0.408\\
\hline 
\end{tabular}
\tablefoot{\tablefoottext{a}{The probability that the RBG09 and
RJS06 clump mass samples represent the subsamples of the same parent 
distribution is 100\% ($D_{\max}=0.001$).}} 
\end{table}