\begin{table}%t4
%\centering
\par
\caption {\label{ave_ew}Average values of {\it EW}s for off-nuclear and nuclear radio galaxies and inactive elliptical galaxies compared to 
{\it EW}s of supergiants (SG), giants (G) and dwarfs (DW).}
\begin{tabular}{lccccc}%{llllll}
\hline\hline
\noalign{\smallskip}
&SiI & CO(6--3) & NaI & CaI & CO(2--0) \\
\noalign{\smallskip}
\hline
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RG: off-nuc & $3.7\pm1.2$ & $4.3\pm0.7$ & $4.2\pm0.5$ & $3.3\pm0.3$ & $20.3\pm4.4$ \\
RG: nuc & $2.6\pm0.7$ & $4.7\pm1.1$ & $4.0\pm0.9$ & $4.3\pm2.1$ & $16.2\pm2.4$ \\
Ellipticals: & $2.9\pm1.4$ & $4.9\pm1.0$ & $4.7\pm0.7$ & $3.2\pm1.0$ & $16.6\pm2.3$ \\
Supergiants (I):      & $4.3\pm 0.6$ & $4.6\pm2.7$ &-- &-- & $17.6\pm 8.0$ \\
Giants  (III):    & $3.8\pm 0.4$ & $5.1\pm1.9$ & $2.8\pm0.5$ & $2.9\pm0.8$ & $16.4\pm4.7$ \\
Dwarfs (V):      & $3.2\pm 0.8$ & $1.8\pm0.6$ & $2.9\pm1.9$ & $2.6\pm1.4$ & $\ ~5.3\pm3.1$ \\
\noalign{\smallskip}
\hline
\end{tabular}
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\end{table}