\begin{table}%t7
\caption{\label{tab7}Comparison between the effective collision
strengths  at~10~000~K 
in LS-coupling obtained from three different configuration
expansions for the target and
those of Sunderland et~al. (\cite{Sunderland2002}). The data is for transitions
from the 3d$^7$ $\rm ^4F$ ground state to other terms of the 3d$^7$ configuration.}
%\centering
\par
\begin{tabular}{@{}ccccccc}
            \hline \hline
 & 10-conf & 12-conf & 18-conf & Sunderland \\
            \hline
$\rm ^4P$& 6.916 & 7.358& 7.050& 6.049 \\ 
$\rm ^2G$& 3.393 & 3.514& 3.259& 2.857 \\ 
$\rm ^2P$& 1.028 & 1.132& 1.035& 0.966 \\ 
$\rm ^2H$& 3.316 & 3.164& 3.040& 2.632 \\ 
$\rm ^2D$& 1.596 & 1.762& 1.838& 1.274 \\ 
$\rm ^2F$& 1.828 & 1.922& 1.961& 1.536 \\ 
$\rm ^2D2$& 0.725&0.729 &0.697 & 0.644 \\ 
            \hline
         \end{tabular}
\end{table}