\begin{table}%t3
\caption{\label{comxj.15}Stellar populations in each subsample, i.e., results of fitting the combined spectra by using 15~SSPs ($Z=Z_{\odot}$) from~BC03.} 
%\centering
\small
\begin{tabular}{cc|cccc|ccc}
\hline \hline
\multicolumn{2}{c|}{SSP}
  & \multicolumn{4}{c|}{Emission-line diagram}  &
\multicolumn{3}{c}{Star-forming in $L_{\rm IR}$ bins}   \\
  &  & star-forming & composite & LINER & Seyfert 2& ULIG\&LIG & starburst & normal \\
\hline
age& young  & 38.6& 33.5& 0.1& 12.0& 50.6& 31.4& 31.8  \\
&intermediate & 55.6& 57.4& 43.4& 54.3& 39.3& 65.0& 66.9 \\
&old& 5.8& 9.1& 39.7& 19.0& 10.1& 3.6& 1.3 \\
&power law & & &  16.8& 14.7& & &  \\
\hline
\end{tabular}
\vspace*{3mm}
\end{table}