\begin{table}%t3
\caption{\label{cha1_tab1}The central coordinates, the number of stars selected from each field  and the stars classified as dwarfs.}
\par
%\centering
\par
\begin{tabular}{lcccr}
\hline\hline
Field &$\alpha(J2000)$&$\delta(J2000)$    &Total&Stars classified\\
Id.   &($^{\circ}$)   &($^{\circ}$)       &stars&as dwarfs \\
\hline
\multicolumn{5}{l}{L1517}          \\
F1   &74.166973 & $+$30.557486&395&292 \\
F2   &73.670855 & $+$31.053637&339&260 \\
F3   &73.555237 & $+$30.138617&508&402 \\
F4   &73.080485 & $+$30.648516&299&230 \\
Total&                 &                      &1541&1184  \\\hline
\multicolumn{5}{l}{Chamaeleon I}          \\
F1   &169.399281&$-$76.719727&521  &360   \\
F2   &165.432583&$-$76.312943&494  &352   \\
F3   &167.607235&$-$77.711487&235  &161   \\
F4   &163.267247&$-$77.305313&360  &260   \\
F5   &165.209741&$-$78.675217&502  &351   \\
F6   &160.921746&$-$78.242210&550  &389   \\
Total&                  &                      &2662&1873  \\\hline
\multicolumn{5}{l}{Lupus 3}               \\
F1   &242.405769&$-$39.179062&490  &335   \\
F2   &241.008065&$-$39.471130&814  &561   \\
F3   &243.129521&$-$38.354233&487  &308   \\
Total&          &            &1791 &1204  \\\hline
\multicolumn{5}{l}{NGC 7023}   \\
F1   &315.431610&$+$68.160049&310  &230   \\
F2   &314.744713&$+$67.160805&394  &281   \\
\hline
\end{tabular}
\end{table}