\begin{table}
\caption{Emission lines from elements of $Z>30$. \label{rs}} 
%\centerline
{
\begin{tabular}{llcc}
\hline\hline
{Ion} & {$\lambda$({\AA})} &     \multicolumn{2}{c}{$10^5I/I({\rm H}\beta)$} \\
\cline{3-4}\\
    &          &     {This}  &  {PB}\\
\hline
{[Se~{\sc ii}]}   &    7592.00    &             blend$^a$    &     blend              \\
{[Se~{\sc iii}]}  &    8854.20    &              $<$9     &     $15.0\pm2.3$   \\
{[Br~{\sc iii}]}  &    6131.00    &             $<$11    &     $7.6\pm1.1$    \\
{[Br~{\sc iii}] } &    7385.1     &              2       &     $<$2.5         \\
{[Kr~{\sc iii}]} &    6826.90    &             44$^b$   &    $41\pm2$        \\
{[Kr~{\sc iv}] } &    5346.10    &           148$^c$    &     $187\pm6$      \\
{[Kr~{\sc iv}] } &    5868.00    &           231$^d$    &     $255\pm15$     \\
{[Kr~{\sc iv}] }  &    6107.80    &              5       &     $6.3\pm1.6$    \\
{[Kr~{\sc v}]  }  &    6256.50    &            18$^e$    &     $15.1\pm1.5$   \\
{[Rb~{\sc iv}] }  &    5759.40    &             23$^f$   &     $17.4\pm2.6$   \\
{[Rb~{\sc v}]  }  &    5080.20    &              7       &     $<$4           \\ 
{[Sr~{\sc vi}] }  &    4249.30    &              1       &     $7\pm5$        \\
{[Sr~{\sc vi}] }  &    5434.40    &            $<$6      &     $8\pm4$        \\
{[Sr~{\sc v}]  }  &    4922.20    &              blend       &      blend             \\
{[Zr~{\sc vii}]}  &    7379.70    &            $<$35     &       blend            \\
{[Te~{\sc ii}] }  &    8049.60    &              blend       &     $<$1.5        \\
{[I~{\sc ii}]  }  &    7282.90    &              blend       &      blend           \\
{[Xe III]      } &    5846.70    &             12$^g$   &     $9.3\pm2$    \\
{[Xe~{\sc iv}] }  &    5709.20    &              9       &     $10.6\pm2$    \\
{[Xe~{\sc iv}] }  &    7535.40    &             14       &     $15.8\pm0.6$  \\
{[Xe~{\sc vi}] }  &    6408.89    &              blend       &     $13.2\pm1.6$  \\
{[Cs~{\sc ii}] }  &    7219.70    &            $<$19     &     $<$10         \\
{[Cs~{\sc vi}] }  &    8210.60    &            $<$14     &     $3\pm2$       \\
Ba~{\sc ii}     &    4554.00    &              2       &      7.8:         \\
Ba~{\sc ii}     &    4934.10    &              4       &      $<$5.6       \\
Ba~{\sc ii}     &    6141.70    &              7       &      7.5          \\
{[Ba~{\sc iv}]  } &    5696.60    &             8$^h$    &     $7.3\pm2.2$   \\ 
{[Ba~{\sc viii}]}&    4233.60    &            $<$3      &     $5\pm4$       \\
{[Pb~{\sc ii}]  }&    7099.80    &              10      &     $3.5\pm1.0$   \\
{[La~{\sc v}]   }&    4621.00    &            $<$26     &       blend          \\
\hline\end{tabular}}
\medskip
$^{a}$ Blended with a strong line.\\
$^{b}$ Ignore contribution from the C~{\sc I} $\lambda$6828.11 line.\\
$^{c}$ Ignore contribution from the C~{\sc III}$\lambda$5345.80 line.\\
$^{d}$ Corrected for a $9\%$ contribution from the He~{\sc ii} $\lambda$5869.00 line,
\mbox{assuming} He~{\sc II} $I(\lambda5869.00)/I(\lambda5896.79)=0.58$.\\
$^{e}$ Corrected for a $28\%$ contribution from the C~{\sc ii} $\lambda$6256.54 line,
\mbox{assuming} C~{\sc ii} $I(\lambda6256.54)/I(\lambda6250.74)=0.56$.\\
$^{f}$  Corrected for a $18\%$ contribution from the He~{\sc ii}
$\lambda$5759.44 line, \mbox{assuming} He~{\sc ii} $I(\lambda5759.44)/I(\lambda5762.63)=0.71$.\\
$^{g}$ Corrected for a $69\%$ contribution from the He~{\sc ii} $\lambda$5847.10 line,
\mbox{assuming} He~{\sc II} $I(\lambda 5847.10)/I(\lambda5857.27)=0.93$.\\
$^{h}$ Neglect contribution from the C~{\sc iii} $\lambda$5695.9 line.
\end{table}