\begin{table}%t4
   %\centering
\par
    \caption {Abundance changes 
 for each ion in HR~5049.
$\Delta M$:  the abundance difference due to the change of the metallicity from [M/H]~=~1.0 to~0.0.
$\Delta T$+:  $T_{\rm eff} = 10~300$~K + 300~K (increase $T_{\rm eff}$ by 300~K),
$\Delta T$$-$:  $T_{\rm eff}  =10~300$~K $-$ 300~K, 
$\Delta G$+:  log~{\it g} = 3.81 + 0.2,
and $\Delta G-$:  log~{\it g}~=~3.81 $-$ 0.2. 
 \label{tab4}}
   \begin{tabular}{cccccc}                           
 \hline \hline
 Ion &  $\Delta M$ & $\Delta T$+ & $\Delta T -$ & $\Delta G$+ & $\Delta G-$    \\
\hline
\ion{C}{ii}   & +0.20 & $-$0.05 & $-$0.05 & +0.05 & $-$0.10 \\   
\ion{O}{i}    & +0.05 & +0.04  & 0.00  & 0.00  & 0.00   \\
\ion{Mg}{i}  & $-$0.14  & +0.17  & $-$0.17 & $-$0.07 & +0.07  \\
\ion{Mg}{ii} & $-$0.05  & $-$0.14  & $-$0.08 & 0.00  & $-$0.05  \\
\ion{Si}{ii} & +0.11  & $-$0.04  & +0.04   & +0.03 & $-$0.02   \\
\ion{Cl}{ii} & +0.27   & $-$0.14  & +0.15   & +0.11 & $-$0.11   \\
\ion{Sc}{ii} & $-$0.14  & +0.18  & $-$0.18 & 0.00 & +0.01     \\
\ion{Ti}{ii} & $-$0.10  & +0.15  & $-$0.12 & +0.03 & $-$0.01 \\
\ion{V}{ii}  & $-$0.10  & +0.09  & $-$0.09 & +0.04 & $-$0.03      \\
\ion{Cr}{i}  & $-$0.14  & +0.20  & $-$0.20 & $-$0.06 & +0.07    \\
\ion{Cr}{ii} & +0.03  & +0.03  & $-$0.02 & +0.05 & $-$0.03    \\
\ion{Mn}{ii} & $-$0.04  & +0.03  & $-$0.03 & +0.04 & $-$0.04     \\
\ion{Fe}{i}  & $-$0.14  & +0.16  & $-$0.16 & $-$0.06 & +0.05     \\
\ion{Fe}{ii} & +0.04  & +0.02  & $-$0.02 & +0.06 & $-$0.05     \\
\ion{Co}{i}  & $-$0.12  & +0.15  & $-$0.15 & $-$0.05 & +0.06     \\
\ion{Co}{ii} & +0.07  & $-$0.01  & $-$0.01 & +0.05 & $-$0.06    \\
\ion{Ni}{ii} & +0.20  & $-$0.08   & +0.07  & +0.06 & $-$0.07           \\
\ion{Sr}{ii} & $-$0.14  & +0.18   & $-$0.18  & $-$0.04 & +0.04          \\
\ion{Y}{ii}  & $-$0.15  & +0.22   & $-$0.22  & $-$0.03 & +0.03          \\
\ion{Ba}{ii} &$-$0.16 & +0.21  & $-$0.23 & $-$0.04 & +0.04    \\
\ion{La}{ii} & $-$0.15  & +0.24   & $-$0.25 & $-$0.04  & +0.04         \\
\ion{Ce}{ii} & $-$0.17  & +0.21    & $-$0.22 &$-$0.03  & +0.03       \\
\ion{Pr}{ii} & $-$0.15   & +0.24   & $-$0.24 & $-$0.04 & +0.05    \\
\ion{Pr}{iii} & +0.01   & +0.05       & $-$0.08 & +0.04 & $-$0.06     \\
\ion{Nd}{iii} & +0.01 & +0.05  & $-$0.08 & +0.04 &  $-$0.06   \\
\ion{Eu}{ii} & $-$0.13  & +0.21  & +0.01 & +0.09 &  $-$0.09        \\
\ion{Eu}{iii} & 0.00  &  $-$0.02  & $-$0.24 & $-$0.04 & +0.03      \\
\ion{Gd}{ii} & $-$0.15  & +0.21   & $-$0.20 &$-$0.02 & +0.03        \\
\ion{Dy}{ii} & $-$0.16  & +0.22  & $-$0.22  & $-$0.04 & +0.04       \\
\ion{Dy}{iii} &$-$0.04 & +0.03  & $-$0.03  & +0.08 & $-$0.08        \\
\par
      \noalign{\smallskip}                                            
      \hline                                                 
\par
    \end{tabular}                         
       \end{table}