\begin{table}%t6
\caption{\label{stack}Results from the co-added MIPS images.}
%\centerline
 {
\begin{tabular}{lccccccc}
\hline\hline
Sample & $N$ & $\langle F_{\rm{24~\mu m}} \rangle$ & $F_{\rm{70~\mu m}}$ & $F_{\rm{160~\mu m}}$ & 
$\langle  F_{\rm{1.2~mm}} \rangle$ & $F_{\rm{160~\mu m}}$/$\langle  F_{\rm{1.2~mm}}\rangle$$^a$ & $F_{\rm{70~\mu m}}$/$\langle F_{\rm{24~\mu m}} \rangle$$^a$\\
       &   &  ($\mu$Jy)&\multicolumn{2}{c}{from stack median (mJy)} & (mJy) & & \\
\hline
\multicolumn{8}{c}{GO 30391 data}\\
{\bf All}                   & {\bf21} &    {\bf571~$\pm$~27} & {\bf2.78~$\pm$~0.33 } & {\bf13.47~$\pm$~2.76} & {\bf1.67~$\pm$~0.27}& {\bf8.1~$\pm$~3.0} &   {\bf4.9~$\pm$~0.8}	\\
1.2~mm ${\it SNR} >3$       & 10 &   585~$\pm$~32 & 2.56~$\pm$~0.38 & 14.63~$\pm$~4.05 &  2.77~$\pm$~0.18 &  5.3~$\pm$~1.8 & 4.4~$\pm$~0.9 \\
1.2~mm ${\it SNR}<3$       & 11 &   559~$\pm$~44 & 3.08~$\pm$~0.67 & 11.95~$\pm$~4.08 & 0.68~$\pm$~0.24 & 17.6~$\pm$~12.2 & 5.5~$\pm$~1.6 \\
\hline
\multicolumn{8}{c}{\citet{Youn09} data}\\
All		      & 12 & 	680~$\pm$~50 & 3.3~$\pm$~0.6  & 21.7~$\pm$~7.9 & 1.4~$\pm$~0.3 & 15.5~$\pm$~9.0 & 4.9~$\pm$~1.3 \\
\hline
\end{tabular}}
\par
\smallskip
$^{a}$ $F_{\rm{160~\mu m}}$/$\langle F_{\rm{1.2~mm}} \rangle$ and $F_{\rm{70~\mu m}}$/$\langle F_{\rm{24~\mu m}} \rangle$ are computed with the stack medians for $F_{\rm{70~\mu m}}$ and $F_{\rm{160~\mu m}}$.
\end{table}