\begin{table}%t2
\caption{\label{tbl3}OB~Stars in the 3 OB~categories and corresponding statistics. }
\small%\centerline
{
\begin{tabular}{@{}lccccccc}
\hline
\hline
  $N_{i}$: & {\bf OBMS} (\%) & {\bf OBe} (\%) & {\bf OBSG} (\%) & Ecl. (\%) & $N_{\rm tot}$ (\%) \\
\hline 
 ampl. $\ge$ $T_{\rm h}$ & 256 ($34\pm4.5$) & 172 ($23\pm4$) & 201 ($27\pm4$)& 122 ($17\pm3.5$) & 751 ($31\pm2.5$) \\
 $T_{\rm l}$ $\le$ ampl. $<$ $T_{\rm h}$  	& 442 ($68\pm5$)  & 32 ($5\pm2$)&   177 ($27\pm4.5$)& & 651 ($27\pm2$)\\
 ampl. $<$   $T_{\rm l}$	& 782 ($78\pm3$)& 25 ($2\pm1$)& 198 ($20\pm3$)&	(1)& 1005 ($42\pm2.5$) \\
\hline
Total category & {\bf 1480} ($61\pm2.5$) & {\bf 229} ($10\pm 1.5$)& {\bf 576} ($24\pm2$)&  & 2407 \\
\hline
Not included  & 2  & 0 & 1 & (4) &  7 \\
Total category & {\bf 1482} ($61\pm2.5$) & {\bf 229} ($10\pm 1.5$)& {\bf 577} ($25\pm2$)&  & 2414 \\
\hline
 {\bf Statistics} (\%)  & &  & & & \\
OB$_{i,v}$ vs. tot. OB$_{i}$ & $17\pm2.5$ & {\bf $75\pm7$} &$ 35\pm5$ & &  \\
OB$_{i,b}$ vs. tot. OB$_{i}$ & $83\pm2.5$ & $25\pm7$ & $65\pm5$ & &  \\
OB$_{i,pv}$ vs. tot. OB$_{i}$ & $30\pm3$ & $14\pm6$ & $31\pm5$  &&  \\
OB$_{i,nv}$ vs. tot. OB$_{i}$ & $53\pm3$ & $11\pm5$ & $33\pm5$  && \\
OB$_{i,v}$ vs. OB$_{v}$  & $46\pm4.5$ & $24\pm4$ & $30\pm4$  && 751 \\
OB$_{i,b}$ vs. OB$_{b}$ & $74\pm3$ & $3\pm1$ & $23\pm2.5$ & & 1656\\
\hline
\end{tabular}}
\smallskip
{OB$_{i}$ corresponds to the 3 intrinsic categories, $i$ being OBMS, OBe or OBSG.
The index $v$ stands for ``variable'' (above $T_{\rm h}$), $b$ means below $T_{\rm h}$, $nv$~stands for 
``non-variable'' and $pv$ stands for ``possibly variable''. In the cases ``A vs. B'', 
$B={\rm OB}_{i}$ corresponds to $N_{\rm tot} = 1480$, $229$ or $576$; while A corresponds to
$N_{i}$.   } 
\vspace*{4mm}  
\end{table}