\begin{table}%t4
\caption{Compton-thick/thin Seyfert 2 candidates. \label{tab4}}
%\centerline
{\begin{tabular}{lcccc}
\hline
\hline
\multicolumn{1}{c}{Name} &
\multicolumn{1}{c}{$\Gamma_{\rm 2-10~keV}$} &
\multicolumn{1}{c}{{\it EW}$_{\rm Fe~K}$} &
\multicolumn{1}{c}{Flux diag.} &
\multicolumn{1}{c}{Thick?} \\
\multicolumn{1}{c}{(1)} &
\multicolumn{1}{c}{(2)} &
\multicolumn{1}{c}{(3)} &
\multicolumn{1}{c}{(4)} &
\multicolumn{1}{c}{(5)} \\
\hline
NGC 676  &       &       &Thick   & $\surd$      \\   
NGC 1058 &       &       &Thick/SB& ?            \\
NGC 1068 & Thick &Thick  &Thick   & $\surd$      \\
NGC 2685 & Thick &       &Thin    & ?            \\
NGC 3079 &       &Thick  &Thick   & $\surd$      \\
NGC 3185 &       &       &Thick   & $\surd$      \\
NGC 3486 & Thick &       &Thick/SB& ?            \\
NGC 3941 &       &       &Thin    & $\times$     \\
NGC 4138 & Thick &Thin   &Thin    & $\times$     \\
NGC 4258 & Thick &Thin   &Thin    & $\times$     \\
NGC 4388 &       &Thin   &Thin    & $\times$     \\
NGC 4472 &       &       &Thin    & ?            \\
NGC 4477 &       &       &Thin    & $\times$     \\
NGC 4501 & Thin  &       &   Thin & $\times$     \\
NGC 4565 &       &Thin   &   Thin & $\times$     \\
NGC 4698 &       &       &Thin    & $\times$     \\
NGC 4725 &       &       &Thin    & $\times$     \\
NGC 5194 &       &Thick  & Thick  & $\surd$      \\
\hline
\end{tabular}}
\par
\smallskip
Notes: "Thick'' = Compton-thick candidate, "Thin'' = Compton-thin candidate,
"SB'' = starburst candidate on the basis of spectral diagnostics (Cols. 2 and 3) 
and flux diagnostics (Col. 4). Final classification (Col. 5): 
"$\surd$'' = Compton-thick candidates, "$\times$'' = Compton-thin candidate,
and "?'' = classification uncertain (likely to contain a starburst, but CT nature 
cannot be excluded).
\end{table}