\begin{table}%T3
\caption{\label{tab_7_components}Number of IVC/HVC \ion{Ca}{ii}~absorption components observed with UVES and their absolute and percental values. The total number of sight lines which show \ion{Ca}{ii}~absorption lines is 31. The last two columns show the data analysed by \citet{prochteretal06} for comparison. Their total number of sight lines is 25.}
\small
%\centering
\par
\begin{tabular}{ccccc}
\hline\hline
\rule{0pt}{3ex}Number of &Sight lines with &  & Sight lines with & \\
components &\ion{Ca}{ii}~absorption & [\%] & \ion{Mg}{ii}~absorption & [\%]\\
\hline
\rule{0pt}{3ex}1&17&55&5&20\\
 2&7&23&13&52\\
 3&4&13&2&8\\
 4&3&1&3&12\\
 5&0&0&1&4\\
 6&0&0&0&0\\
 7&0&0&1&4\\\hline
\end{tabular}
\end{table}