\begin{table}%t3
\caption{Unabsorbed fluxes, luminosities, and the conversion efficiencies of \PSR\ 
and the nebular components in $0.5{-}10$~keV.}\label{tab3}
\small%\centerline
 {
\begin{tabular}{lccc}
\hline\hline
%&&& \\[-8pt]
Component & $f_{\rm X}$ & $L_{\rm X}$$^{a}$ & $L_{\rm X}/\dot{E}$ \\
           & erg s$^{-1}$ cm$^{-2}$ & erg s$^{-1}$ & \\
\hline
%&&& \\[-8pt]
\PSR\              & $2.5\times 10^{-13}$ & $3.9\times 10^{30}$  & $1.0\times 10^{-3}$  \\
Trail-like feature$^{b}$ & $5.3\times 10^{-14}$ & $8.3\times 10^{29}$  & $2.1\times 10^{-4}$  \\
Arc-like feature   & $1.7\times 10^{-14}$ & $2.7\times 10^{29}$  & $6.9\times 10^{-5}$   \\
\hline
 \end{tabular}}
\medskip
$^{a}$ {\footnotesize Luminosities are calculated at the assumed pulsar distance of 361~pc}.\\
$^{b}$ {\footnotesize Adopted from Becker et~al. (\cite{Beck06})}.
\end{table}