\begin{table}%t5
%\centering
\par
\caption{Plasma diagnostics. \label{diagnostic}}
\begin{tabular}{clc}
\hline\hline
{ID}           & {Diagnostic}     &
{Result}\\
\hline
& & $T_{\rm e}$~(K)\\
 1&[Ne~{\sc iii}] 15~$\mu$m/($\lambda3868+\lambda3967$)&12~900\\
 2&[Ar~{\sc iii}] $\lambda$7135/$\lambda$5192 &12~800\\
 3&[O~{\sc iii}] ($\lambda4959+\lambda5007$)/$\lambda$4363 &12~600\\
 4&[N~{\sc ii}] ($\lambda6548+\lambda6584$)/$\lambda$5754&12~900\\
 5&[Ne~{\sc iv}] $\lambda$1602/($\lambda2422+\lambda2425$)&15~300\\
 6&[O~{\sc iii}] $\lambda$4363/$\lambda$1663&14~700\\
 7&[O~{\sc ii}] ($\lambda7320+\lambda7330$)/$\lambda$3726&18~700\\
 8&[O~{\sc i}] $\lambda$5577/($\lambda6300+\lambda6363$)  &10~400\\
 9&[Mg~{\sc v}] $\lambda$2783/5.6~$\mu$m &15~600\\
  & He~{\sc i} $\lambda6678/\lambda4471 $ &9430\\
  & He~{\sc i} $\lambda6678/\lambda5876 $ &12~700\\
 & He~{\sc i} $\lambda7281/\lambda5876 $ &8800\\
  & He~{\sc i} $\lambda7281/\lambda6678 $ &10~530\\
  & BJ/H~11 &  12~800\\
\noalign{\vskip3pt}
 & & $\log N_{\rm e}$~(cm$^{-3}$)\\
 10&[Ar~{\sc iv}] $\lambda$4740/$\lambda$4711 & 4.77\\
 11&[C~{\sc iii}] $\lambda$1906/$\lambda$1909 & 4.80\\
 12&[Cl~{\sc iii}] $\lambda$5537/$\lambda$5517 &4.70\\
 13&[Ne~{\sc iv}] $\lambda$2425/$\lambda$2423 &4.69\\
 14&[Si~{\sc iii}] $\lambda$1884/$\lambda$1892 & 4.54\\
 15&[S~{\sc ii}] $\lambda$6731/$\lambda$6716  & $\ga$5\\
 16&[Ne~{\sc v}] 24~$\mu$m/14~$\mu$m  & 4.31\\
 17&[Ne~{\sc iii}] 15~$\mu$m/36~$\mu$m  & 4.89\\
 18&[O~{\sc ii}] $\lambda$3726/$\lambda$3729  & 4.68\\
 19&[Fe~{\sc iii}] $\lambda$4881/$\lambda$4701  & 5.27\\
 20&[Fe~{\sc iii}] $\lambda$4701/$\lambda$4733  & 4.50\\
 21&[Fe~{\sc iii}] $\lambda$4733/$\lambda$4754  & 4.27\\
   &H I Balmer decrement &   $\sim$5\\
   &He II Pfund decrement &  $\sim$5\\
\hline\end{tabular}
\end{table}