\begin{table}%T9
\caption{\label{tab:overview}Rapidly oscillating Ap stars studied for magnetic field pulsations.
}
%\centerline
{
\begin{tabular}{rlccccccc}
\hline\hline
Star & $T_{\rm eff}$ &$\log~g$ & $v~\sin i$&$P_{\rm rot}$&$\left< {\cal B}_z\right>_{\rm aver}$& 
$\sigma_{z,{\rm aver}}$ & $P_{\rm puls}$ &$\Delta B_{\rm max}$\\
 &\multicolumn{1}{c}{[K]} & & [km s$^{-1}$] & [d]&[G]&[G]&[min]&[mmag]\\
\hline 
HD~83368$^1$ & 7960 & 4.0 & 33.0 & 2.85&$-$847 $\pm$ 108& 56 & 11.6&10\\
HD~101065$^2$ & 6600& 4.2 & 3.5 & &$-$1014 $\pm$ 72& 57 & 12.1&13\\
HD~128898$^1$ & 7998& 4.2& 13.0 & 4.48&$-$239 $\pm$ 136& 62 &6.8&5\\
HD~137949$^1$ & 7030& 3.9 & & $>$75~y?& 2146 $\pm$ 55& 51 & 8.3&3\\
HD~201601$^1$ & 7620 & 4.0 & & $>$70~y&$-$1072 $\pm$ 173& 55 &12.4&3\\
HD~217522$^3$ & 6808& 4.0 & 3.0 &&$-$686 $\pm$ 111& 79 & 13.9&4\\
\hline
\end{tabular}}
\smallskip
$^1$Hubrig et~al. (\cite{HNM00});
$^2$Cowley et~al. (\cite{CR00});
$^3$Hubrig et~al. (\cite{HC02}).
\end{table}