\begin{table}%t2
%\centering
\par
\caption{\label{tbl2}Results of our analysis of the time-resolved polarized spectra of \equ. The columns list UT date of observation, reference Julian date, number of analysed spectra and a least-squares estimate of the pulsational period, average amplitude and phase (measured in fractions of the period) of the pulsational {\it RV} variation
in 13 \nd\ lines. The last  three columns report the amplitude of the magnetic variation, standard
deviation of the \bz\ measurements and an amplitude which would have been detected with out data at the 3$\sigma$ confidence level.}
\begin{tabular}{clclccccc}
\hline
\hline
UT Date & $T_0-$   & $N$ & ~~~~~~$P$  & $\langle A\rangle$ & $\varphi$ & $\Delta$\bz\ & $\sigma($\bz$)$& $\Delta$\bz$_{\rm max}$\\ 
        & 2~400~000  &   & ~~~(min)& (\ms)                 &           & (G)          & (G)            & (G)             \\
\hline
\multicolumn{9}{c}{13 lines of \nd} \\
19/08/2003 & 52~871.5140 & 70 & $12.212 \pm 0.013$ & 963	 &  $0.102\pm0.004$ & $30\pm17$ & 105 & 63 \\
20/08/2003 & 52~872.3727 & 70 & $12.169 \pm 0.012$ & 854	 &  $0.382\pm0.004$ & $37\pm13$ &  80 & 48 \\
11/09/2003 & 52~894.2954 & 70 & $12.231 \pm 0.024$ & 262	 &  $0.011\pm0.012$ & $14\pm10$ &  59 & 36 \\
%\multicolumn{9}{c}{19 lines of Ca, Cr, Fe} \\
%19/08/2003 & 52871.5140 & 70 & 12.212           & 30$\pm$19 &  0.680$\pm$0.102 & 18$\pm$14 &  84 & 51 \\
\hline
\end{tabular}
\end{table}