\begin{table}%t2
    \caption{X-ray bright \xmm\ sources in L1551 for which
      spectral and timing analysis has been performed from EPIC pn
      data. The ROSAT count rate is as given in Carkner et~al. (\cite{cfk+96}).
      In the ROSAT PSPC observation HL~Tau is unresolved from the
      nearby XZ Tau, as discussed in the text.}  
%%%\centering
\par
    \begin{tabular}{r|rcl} 
    \hline  \hline
      Source &  EPIC-pn rate & ROSAT rate & Counterpart\\ ~
  &${\rm (ks)^{-1}}$ & ${\rm (ks)^{-1}}$ ~& \\  
  \hline 
  S1 &  1.1 $\pm$ 0.2 &  -- & USNO-A2.0 star\\ 
  S2 &  11.1 $\pm$ 0.6 &  -- & [BHS98]~MHO~5\\ 
  S3 &  267.0 $\pm$ 2.5 &  103 & V826 Tau\\ 
  S4 &  4.1 $\pm$ 0.4 &  -- & --\\ 
  S5 &  3.9 $\pm$ 0.5 &  -- & --\\ 
  S6 &  36.7 $\pm$ 1.0 &  67 & V827 Tau\\ 
  S7 &  69.2 $\pm$ 1.3 &  47 & V1075 Tau\\ 
  S8 &  2.5 $\pm$ 0.5 &  -- & --\\ 
  S9 &  2.3 $\pm$ 0.4 &  -- & --\\ 
 S10 &  3.6 $\pm$ 0.5 &  -- & --\\ 
 S11 &  3.2 $\pm$ 0.4 &  -- & --\\ 
 S12 &  3.0 $\pm$ 0.4 &  -- & [SB86] L1551 3\\ 
 S13 &  1.5 $\pm$ 0.3 &  -- & [FK83]~LDN~1551~9\\ 
 S14 &  45.6 $\pm$ 1.1 &  54 & V710 Tau A,B\\ 
 S15 &  1.6 $\pm$0.2 &  -- & --\\ 
 S16 &  2.0 $\pm$0.5 &  -- & [SB86] L1551 2\\ 
 S17 &  7.2 $\pm$ 0.6 &  -- & --\\ 
 S18 &  132.8 $\pm$ 1.7 &  20 & XZ Tau\\ 
 S19 &  40.1 $\pm$ 1.0 & unres. & HL Tau\\ 
 S20 &  1.3 $\pm$ 0.3 &  -- & HH~154\\ 
 S21 &  3.0 $\pm$ 0.4 &  -- & --\\ 
 S22 &  538.9 $\pm$ 3.5 &  151 & HD 285845\\ 
 S23 &  5.2 $\pm$ 0.6 &  3.1 & [BHS98]~MHO~4\\ 
 S24 &  1.7$\pm$ 0.3 &  -- & --\\ 
 S25 &  5.3$\pm$ 0.6 &  -- & [BHS98]~MHO~9\\ 
 S26 &  22.3 $\pm$ 0.8 &  9.3 & JH 188\\ 
 S27 &  2.2 $\pm$ 0.3 &  -- & --\\ 
\hline
  \end{tabular}
    \label{tab:all} 
\end{table}