\begin{table}%t5
%\centering
\par
\caption{\label{lum} X-ray luminosities and luminosity ratios from {\it EINSTEIN}, {\it ROSAT} and {\it XMM} observations of HD~159176. Luminosities are calculated for a 1.5 kpc distance. The Obs. CR column gives the count rates from Chlebowski et~al. (\cite{Chle}) and Bergh\"ofer et~al. (\cite{BSC}) respectively for {\it EINSTEIN} and {\it ROSAT}, as well as our value for \mbox{EPIC-pn}. The Th. CR column provides the theoretical count rates calculated on the basis of the individual instrument response matrices for the 3~component model of Table~\ref{fitpn} (see text). }
\begin{tabular}{c c c c c}
\hline\hline
Satellite	& $L_{\rm X}$	& $L_{\rm X}$/$L_{\rm bol}$ & Obs. CR & Th. CR\\
	& (erg~s$^{-1}$)	&  & (cts~s$^{-1}$) & (cts~s$^{-1}$)\\
\hline 
{\it EINSTEIN}	& $4.33\times10$$^{33}$ & $2.89\times10^{-6}$ & 0.157 & 0.138\\ 
{\it ROSAT}	& $8.43\times10$$^{32}$ & $5.64\times10^{-7}$ & 0.291 & 0.287\\ 
{\it XMM}	& $1.48\times10$$^{33}$ & $9.93\times10^{-7}$ & 1.303 & 1.328\\
\hline
\end{tabular}
\end{table}