\begin{table}%t6
%\centering
\par
 \caption{X-ray luminosities.}\label{t6}
\begin{tabular}{lcc}
\noalign{\smallskip}\hline \hline\noalign{\smallskip}
\par
Object & $ML$ & $\log (L_{\rm X} / L_{\rm bol})$ \\
\noalign{\smallskip}\hline \noalign{\smallskip}
\object{Sz~100} & & $<$$-4.13$ \\
\object{Sz~102}$^1$ & & -- \\
\object{Sz~106}$^2$ & & -- \\
\object{Sz~108} (A+B)$^3$ & 11.3 & $-3.91$ \\
\object{Sz~109} & & $<$$-3.99$ \\
\object{Sz~110} & & $<$$-3.64$ \\
\object{Sz~112} & 39 & $-4.08$ \\
\object{Sz~113} & & $<$$-2.90$ \\
\object{Sz~114} & & $<$$-4.25$ \\
\noalign{\smallskip}
\object{Par-Lup3-1} & & $<$$-3.39$ \\
\object{Par-Lup3-2} & & $<$$-3.88$ \\
\object{Par-Lup3-3} & & $<$$-4.05$ \\
\object{Par-Lup3-4} & & $<$$-2.39$ \\
\noalign{\smallskip}\hline
\multicolumn{3}{l}{Notes:} \\
\multicolumn{3}{l}{$^1$ $\log(L_{\rm X}/L_\odot) < -4.83$; in this case, $L_{\rm bol}$ is poorly determined.}\\
\multicolumn{3}{l}{$^2$ Confusion with nearby \object{HR~5999}.}\\
\multicolumn{3}{l}{$^3$ HRI observation.}\\
\end{tabular}
\end{table}