\begin{table}%t1
\caption{Results of the excitation temperatures of Si~II, corresponding total number of Si~II (=$n_{\rm e}$), and abundance ratios of N/O, H/O under the hot component condition.} \label{Result}
%\centerline
{\small \begin{tabular}{c c c c}
\hline \hline\noalign{\smallskip}
$T_{\rm ex}$ of Si~II[K]& Si~II(=$n_{\rm e}$) [${\rm cm}^{-3}$]&N / O &H / O\\
\hline\noalign{\smallskip}
10~000$^a$& $1.0\pm0.3 \times 10^{18}$ & $\rm 18.7^{+36.9}_{-18.7}$&$\rm 0.59^{+0.75}_{-0.59}$\\ 
   $\mid$  & & \\
\smallskip
   14~000 & $3.7\pm0.9 \times 10^{16}$ & $\rm 18.8^{+36.8}_{-18.8}$& $\rm 0.59^{+0.74}_{-0.59}$ \\
\smallskip
   15~000 & $2.1\pm0.5 \times 10^{16}$ & $\rm 18.8^{+36.6}_{-18.8}$& $\rm 0.59^{+0.74}_{-0.59}$ \\
\smallskip
   16~000 & $1.3\pm0.3 \times 10^{16}$ & $\rm 18.9^{+36.5}_{-18.9}$& $\rm 0.59^{+0.74}_{-0.59}$ \\
\smallskip
   17~000 & $8.7\pm2.1 \times 10^{15}$ & $\rm 18.9^{+36.3}_{-18.9}$&  $\rm 0.60^{+0.73}_{-0.60}$ \\
    \smallskip
   18~000 & $6.0\pm1.5 \times 10^{15}$ & $\rm 19.0^{+36.0}_{-19.0}$& $\rm 0.60^{+0.73}_{-0.60}$ \\
   $\mid$  & & \\
  20~000 & $3.3\pm0.8 \times 10^{15}$ & $\rm 19.2^{+35.5}_{-19.2}$&  $\rm 0.60^{+0.72}_{-0.60}$ \\
\hline
\end{tabular}}
\smallskip
$^a$ \cite{Jiri1994}.
\end{table}