\begin{table}%t5
\caption{\label{tab:sigma}The uncertainty of the abundances derived from the
uncertainties in the atmospheric parameters and {\it EW}s.}
\small %\centering
\par
\begin{tabular}{ccccccc}
\hline\hline
Element & $\sigma_{T_{\rm{eff}}}$  & $\sigma_{\log g}$ & $\sigma_{\xi}$ & $\sigma_{[\rm Fe/H]}$ & $\sigma_{W}$ & $\sigma_{\rm total}$\\
\noalign{\smallskip}\hline
Na & +0.03 & $-$0.02 & $-$0.02 & 0.00 & +0.04 & 0.06 \\
Mg & +0.04 & $-$0.05 & $-$0.02 & 0.00 & +0.04 & 0.08 \\
Al & +0.03 & $-$0.01 & $-$0.01 & $-$0.01 & +0.08 & 0.09 \\
Si & 0.00 & +0.06 & $-$0.01 & +0.01 & +0.05 & 0.08 \\
Ca & +0.04 & $-$0.03 & $-$0.03 & $-$0.01 & +0.05 & 0.08 \\
Sc & $-$0.01 & +0.15 & $-$0.01 & +0.03 & +0.04 & 0.16 \\
Ti & +0.05 & +0.02 & $-$0.03 & 0.00 & +0.05 & 0.08 \\
V & +0.07 & $-$0.01 & $-$0.01 & 0.00 & +0.04 & 0.08 \\
Cr & +0.04 & +0.03 & $-$0.02 & +0.07 & +0.06 & 0.11 \\
Mn & +0.05 & 0.00 & $-$0.02 & 0.00 & +0.04 & 0.07 \\
FeI & +0.03 & +0.02 & $-$0.02 & 0.00 & +0.05 & 0.06 \\
FeII & $-$0.04 & +0.17 & $-$0.03 & +0.03 & +0.06 & 0.19 \\
Co & +0.03 & +0.04 & 0.00 & +0.01 & +0.04 & 0.06 \\
Ni & +0.05 & +0.07 & 0.00 & +0.03 & +0.07 & 0.11 \\
Cu & +0.04 & +0.05 & $-$0.03 & +0.01 & +0.11 & 0.13 \\
Zn & $-$0.01 & +0.11 & $-$0.03 & +0.03 & +0.07 & 0.14 \\
Sr & +0.08 & $-$0.08 & $-$0.04 & +0.02 & +0.14 & 0.19 \\
Y & +0.01 & +0.09 & $-$0.03 & +0.04 & +0.07 & 0.12 \\
Zr & +0.03 & +0.08 & $-$0.06 & +0.01 & +0.06 & 0.12 \\
Ba & +0.01 & +0.01 & $-$0.01 & +0.05 & +0.03 & 0.06 \\
La & +0.02 & +0.12 & $-$0.06 & +0.03 & +0.12 & 0.18 \\
Ce & +0.01 & +0.09 & $-$0.04 & +0.03 & +0.07 & 0.12 \\
Nd & +0.02 & +0.15 & $-$0.04 & +0.03 & +0.07 & 0.17 \\
Sm & +0.02 & +0.15 & $-$0.04 & +0.03 & +0.08 & 0.18 \\
Eu & 0.00 & +0.15 & $-$0.02 & +0.03 & +0.05 & 0.16 \\
Gd & 0.00 & +0.15 & $-$0.01 & +0.02 & +0.09 & 0.18 \\
\hline
\end{tabular}
\end{table}