\begin{table}%t4
\caption{(extract) List of the 1541 B9- to F2-type stars, with their \ensuremath{v\sin i}~value, spectral type, associated subgroup and classification (CP, CB, blank stands for "normal'').}
\label{list}
%\centering
\small
\begin{tabular}{rrlll}
\hline
\hline
\multicolumn{1}{c}{HD}  & \multicolumn{1}{c}{\ensuremath{v\sin i}}   & \multicolumn{1}{c}{Sp. type} & \multicolumn{1}{c}{Subgroup} & \multicolumn{1}{c}{Classification} \\
  & \multicolumn{1}{c}{(\ensuremath{{\rm km}~{\rm s}^{-1}})}  \\
\hline
     3 & 228 & A1Vn   &      A0--A1 &  \\
   203 & 170 & F2IV   &      F0--F2 &  \\
   256 & 241 & A2IV/V &      A2--A3 &  \\
   319 &  59 & A1V    &      A0--A1 & CP\\
   431 &  97 & A7IV   &      A7--A9 & CB\\
   $\cdots$\\
\hline
\end{tabular}
\end{table}