\begin{table}%t4
\caption{X-ray luminosities of the X-ray brightest T Tauri stars
  detected in the Lupus~3 "star-forming'' region in the 0.3$-$2.0~keV and 2$-$4.5~keV energy bands corrected for interstellar absorption.}\label{tab4}
%\centering
\small
\begin{tabular}{c c c c c}
\hline
\hline
Source & Id. & $L_{\rm 0.3-2~keV}$ & $L_{\rm 2-4.5~keV}$ & $hr$ \\
            & (10$^{29}$ erg s$^{-1}) $ & (10$^{29}$ erg s$^{-1}$) & \\ 
\hline
 13 & TTS 106 & 14.8 & 2.7 & --0.69 \\
 24 & SZ 96 & 31.0 & 7.3 & --0.62 \\
 28 & ParLup3-1/cc-1 & 3.9 & 0.56 & --0.75 \\
 36 & SZ 98 & 4.0 & 2.0 & --0.34 \\
 44 & TTS 110 & 4.8 & 1.2 & --0.60 \\
 74 & SZ 108 & 2.0 & 0.11 & --0.90 \\
 87 & TTS 116 & 32.2 & 3.2 & --0.82 \\
 92 & SZ 114 & 9.6 & 1.0 & --0.81 \\
\hline
\end{tabular}
\end{table}