\begin{table}%t4
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\par
\caption {\label{error}Sensitivity of abundances to changes of
$\Delta T _{\rm eff} = 100$~K,
$\Delta \log g = +0.3$, 
and $\Delta v_{\rm t} = 0.2$~km~s$^{-1}$. In the last
column, the corresponding total error is given. }
\begin{tabular}{lcccc}
\hline\hline
\hbox{Species}  & \hbox{$\Delta T$} & \hbox{$\Delta$$\log g$} &
\hbox{$\Delta v_{\rm t}$} & \hbox{($\sum$x$^{2}$)$^{1/2}$} \\
\hbox{(1)} & \hbox{(2)}& \hbox{(3)} & \hbox{(4)} & \hbox{(5)} \\[-3mm]
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%\hline
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\multicolumn{5}{c}{Original: $T_{\rm eff}=4500$~K, log~$g=2.0$, 
[Fe/H]~=~0.0,
   $v_{\rm t}=1.5$~km~s$^{-1}$}\\
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\hbox{[Fe/H](I)} & $-$0.02 & +0.04   &  $-$0.09 & +0.10 \\
\hbox{[Fe/H](II)}& $-$0.19 & +0.13   &  $-$0.05 & +0.23 \\
\hbox{[O/Fe]}    & +0.01   & +0.05   &  $-$0.01 & +0.05 \\
\hline 
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\end{tabular}
\end{table}