\begin{table}%t4
  \caption{\label{T4}Rotational periods from Ca II index records.}
  %\centerline
{\small
  \begin{tabular}{lrlrrr}
  \hline\hline
  Star & \multicolumn{5}{c}{Rotation periods in days} \\
 & \multicolumn{1}{c}{(1)}  &  \multicolumn{1}{c}{(2)} & \multicolumn{1}{c}{(3)} & \multicolumn{1}{c}{(4)} & \multicolumn{1}{c}{(5)}\\
  \hline
HD 131156A & 6.25  & 6  &  6.31 & -- & 8.2 \\	
HD 131156B & 11.1  & 11 & 11.94 & -- & -- \\
HD 100180  & 14.3 & 14 & --    & 38 & -- \\
HD 201092  & 35.5  & 35 & 37.84 & 36 & 45, 51 \\
HD 201091  & 36.1  & 38 & 35.37 & 36 & 44, 47.5\\
HD 95735   & 54.7   & 53 & --    & -- & 28.5\\
  \hline
  \end{tabular}}
\par
  \medskip
(1) Present paper; (2) Baliunas et~al. (\cite{sallie1}); (3) Donahue et~al. 
(\cite{donahue}); mean periods; (4) Frick et~al. (\cite{frick}; (5) Baliunas et~al. (\cite{sallie2}).
\end{table}