\begin{table}%t1
\caption{\label{table:1}Far-infrared fluxes and dust-to-gas ratios}                  
%\centering
\par
\begin{tabular}{c c c c c l l l l l l }    
\hline\hline                    
 Location & RA    & Dec     & Diameter       & $F_{60~ \mu {\rm m}}^{\rm IRIS}$ & $F_{100~\mu{\rm m}}^{\rm IRIS}$ &  $F_{70 ~\mu{\rm m}}^{\rm MIPS}$ & $F_{160~\mu{\rm m}}^{\rm MIPS}$ & $M_{\rm dust}$       & $M_{\rm gas}$        & $log~(M_{\rm dust}/M_{\rm gas})$\\
          & h m s & deg m s & \arcmin        & Jy                  & Jy                  & Jy                & Jy                    & $10^7~M_{\odot}$ & $10^7~M_{\odot}$ &\\
\hline                    
   Arp's loop NW  & 09 54 34 & +69 16 54 & 4  & 0.962 & 3.493 & 0.285 & 4.386 & 0.393 & 9.043 & --1.362\\  
   Arp's loop N  & 09 55 43 & +69 19 28 & 4  & 0.953 & 2.953 & 0.037 & 2.171 & 2.075 &  1.586 & 0.117\\  
   Arp's loop NE & 09 57 02 & +69 18 56 & 4  & 0.903 & 2.877 & 0.106 & 3.670 & 1.390 & 14.207 & --1.009\\  
   Arp's loop E  & 09 57 09 & +69 11 21 & 4  & 0.853 & 2.788 & 0.198 & 3.048 & 0.271 & 2.6476 & --0.990\\  
   M~81's disk    & 09 55 33 & +69 03 56 & 12 & 20.101 & 65.550 & 71.98 & 272.300 & 2.520 & 175.790 & --2.638\\
\hline                  
\end{tabular} 
\end{table}