\begin{table}%t8
\caption{\label{tab8}Influence of errors on the CNO abundances derived for BD+04$^\circ$2466.}
\par
%\centering
\small
\begin{tabular}{lcccccc}
\hline
\hline
Species & $\Delta T_{\rm eff}^{\rule{0pt}{8pt}}$ & $\Delta\log g$ &
 $\Delta~\xi_{\rm m}$ & $\Delta\log{\rm (C)}$ & $\Delta\log{\rm (O)}$ 
 & $\sigma_{\rm tot}$ \\
 & $+100_{\rule{0pt}{8pt}}$~K  & $+0.2$ & $+0.2$ & $+0.15$ & $+0.15$ & \\
\hline 
C & $+0.15$ & $-0.02$ & $-0.01$ & --- &
 $\;\;0.00$ & $\;\;0.15^{\rule{0pt}{8pt}}$ \\
N & $+0.21$ & $-0.04$ & $\;\;0.00$ & $-0.12$ & $+0.01$ & $\;\;0.24$\\
O & $+0.05$ & $+0.05$ & $-0.01$ & $\;\;0.00$ &
-- & $\;\;0.07_{\rule{0pt}{8pt}}$     \\
\hline
\end{tabular}
\end{table}