\begin{table}%t6
\caption{\label{t:errorcorot4}Abundance uncertainties of CoRoT-4.}
%%\centerline

{\small
\begin{tabular}{lcccccc}
\hline\hline\noalign{\smallskip}
Species & $\Delta T_{\rm eff}$ & $\Delta \log~ g$ & $\Delta \xi$ &
$\Delta W_{\lambda}$ & $\left( \sum \sigma^2 \right)^{1/2}$ &
$\sigma_{\rm obs}$ \\
$_{\rule{0pt}{8pt}}$ & $+70$~K  & $+0.12$      & $+0.1$         & 3 m\AA &   &   \\
\hline
Fe~{\sc i}    & 0.05   &  $-0.01$    & $-0.03$    &  0.05  & 0.08     &   0.05   \\
Fe~{\sc ii}   & $-0.01$  &  0.04     & $-0.04$    &  0.05  & 0.08     &   0.05   \\
Na~{\sc i}    & 0.04   &  $-0.01$    & 0.0      &  0.05  & 0.06     &   0.10   \\
Mg~{\sc i}    & 0.04   &  $-0.01$    & $-0.01$    &  0.04  & 0.06     &   --   \\
Al~{\sc i}    & 0.03   &  $-0.01$    & 0.0      &  0.05  & 0.06     &   --   \\
Si~{\sc i}    & 0.03   &  0.0      & $-0.01$    &  0.05  & 0.06     &   0.08   \\
Ca~{\sc i}    & 0.04   &  $-0.02$    & $-0.03$    &  0.04  & 0.07     &   0.05   \\
Sc~{\sc ii}   & 0.0    &  0.04     & $-0.03$    &  0.05  & 0.07     &   0.05   \\
Ti~{\sc i}    & 0.06   &  $-0.01$    & $-0.01$    &  0.08  & 0.10     &   0.11   \\
Cr~{\sc i}    & 0.06   &  $-0.01$    & $-0.04$    &  0.06  & 0.09     &   0.04   \\
Mn~{\sc i}    & 0.06   &  0.0      & $-0.01$    &  0.06  & 0.09     &   0.03   \\
Ni~{\sc i}    & 0.06   &  $-0.01$    & $-0.04$    &  0.05  & 0.09     &   0.04   \\
Zn~{\sc i}    & 0.03   &  0.0      & $-0.05$    &  0.06  & 0.08     &   --   \\
Ba~{\sc ii}   & 0.02   &  0.02     & $-0.08$    &  0.05  & 0.10     &   0.06   \\
\hline                                                    
Li~{\sc i}   & 0.05    &  0.00      &  0.00    &  --    & 0.05   &  --         \\
O~{\sc i}    & 0.12    &  0.07     &  0.08    &  --    & 0.16   &    0.10       \\
S~{\sc i}    & $-0.03$   &  0.05     &  0.00    &  --    & 0.06   &      0.08       \\
\hline                                                        
\end{tabular}}
\tablefoot{The second column indicates the variation of the abundance  caused by the variation in
$T_{\rm eff}$. The other columns refer, respectively, to the variations caused by
$\log g$, $\xi_{{\rm t}}$, and $W_\lambda$. The sixth column indicates
the combined rms uncertainty of the second to fifth columns. The
last column indicates the observed abundance dispersion for those elements
whose abundances were derived using more than two lines.}
\end{table}