\begin{table}%t2
\caption{\label{tab:abu}\label{tab2}Abundances for both components of V578~Mon, 
$\Delta \epsilon$ with respect to \#201, and $[X/H]$ relative to solar.
Solar abundances are as listed in Table~\ref{tab3}. }
%\centering
\par
\begin{tabular}{crrrrrr}
 \hline \hline 
element & $\Delta \epsilon_{\rm A}$ & $\sigma$ & $[X/H]_{\rm A}$ 
& $\Delta \epsilon_B$ & $\sigma$ &  $[X/H]_B $ \\
 \hline 
C   & $+$0.10  &  0.09  &  $-$0.22  & $-$0.01  & 0.12  & $-$0.33   \\
N   & $-$0.16  &  :     &  $-$0.59  & $+$0.06  & 0.10  & $-$0.37   \\
O   & $-$0.04  &  0.04  &  $-$0.34  & $-$0.01  & 0.05  & $-$0.31   \\
Mg  & $-$0.11  &  0.07  &  $-$0.27  & $<$$+$0.17 & 0.10  & $-$0.09   \\
Si  & $-$0.01  &  0.10  &  $-$0.24  & $+$0.01  & 0.12  & $-$0.22   \\
 \hline
\end{tabular} 
\end{table}