\begin{table}%t2
%\centering
\par
\caption {X-ray flux and H$\alpha$ equivalent width measurements of~\ls.
Errors in $EW$(H$\alpha$) are $\protect\la$10\%.\label{ew}}
\begin{tabular}{l@{~~~}l@{~~~}c@{~~}|c@{~~~}l}
\hline \hline  
Mission  & Date         & $F$$^a_{\rm X}$ & $EW$(H$\alpha$) & Date \\
         & X-ray obs.   &                 & (\AA)           & Opt. obs. \\
 \hline  \\[-3mm]
RXTE     & ~~8/02/1998 & 40$^b$~~~      & 2.2$^c$         & Aug. 1998 \\
ASCA     & ~~4/10/1999 & 10.9$^b$        & 2.8$^b$         & 26/7/1999 \\
BeppoSAX & ~~8/10/2000 & ~~4.9$^b$      & 3.1$^c$         & Oct. 2000 \\
CHANDRA  & 10/09/2002   & ~10.0$^d$      & 2.8$^b$         & 10/9/2002 \\
 \hline
\end{tabular}
\begin{list}{}{}
\item[$^a$] $\times 10^{-12}$ erg cm$^{-2}$ s$^{-1}$ in the energy range 0.3--10~keV.
\item[$^b$] This work.
\item[$^c$] McSwain \& Gies (\cite{mcswain02}).
\item[$^d$] Miller (private communication).
\end{list}
\end{table}