\begin{table}%t6
 \caption{Statistics on total IR luminosities (from~0.4 to~1000~$\mu$m, in~units of solar luminosity) for both samples.\label{list_LIR}} 
%\centering
\par
 \begin{tabular}{cccccc} 
\hline  \hline
   Sample&Nb&average&$\log(L_{{\rm IR}})$&$\log({L_{{\rm IR}}})$&$\sigma$\\ 
   name&of spect.&$\log({L_{{\rm IR}}})$&min&max&(dex)\\
   \hline
   FSM&26&11.5&9.6&12.9&0.8\\ 
   IRAS&27&11.7&10.6&13.0&0.6\\
   \hline
 \end{tabular}
\end{table}