\begin{table}%t5
\par
\caption {\label{models}Best fit models.  The values of the ``observables'' , $O_i^{\rm obs}$, are given for comparison in the note.}
%\centerline
 {                          % used for centering table
\begin{tabular}{l c c c l l c c c c c c c }        % centered columns (4 columns)
\hline\hline                 % inserts double horizontal lines
 Model &$\mathscr M_1$ & $\mathscr M_2$ & $Z$ & $X$ & Age  & $OV_2$ & $\mathscr R_1$  & $\mathscr R_2$  & $T_{\rm eff~ 1}$   & $q$ & $k$ & $\Delta T_{\rm eff}$ \\    % table heading 
            &  (\ms)& (\ms)& & &  (Myr) & &  (\rs)&(\rs)&(K) & & & (K)\\
\hline                        % inserts single horizontal line
 A         &  4.05~$\pm$~0.09 & 2.74~$\pm$~0.06 & 0.014~$\pm$~0.003 & 0.728~$\pm$~0.090 & 121~$\pm$~49& 0.000 & 3.76 & 2.03 & 13189 & 0.676 & 0.541 & 1631\\
 AC       &  4.04~$\pm$~0.11 & 2.75~$\pm$~0.08 & 0.011~$\pm$~0.003 & 0.720$^*$ & 112~$\pm$~9 & 0.062 & 3.68 & 1.97 & 13737 & 0.682 & 0.537 & 1520\\
 B1        &  3.99~$\pm$~0.08 & 2.74~$\pm$~0.06 & 0.011~$\pm$~0.002 & 0.740$^*$ & 131~$\pm$~9& 0.000 & 3.77 & 2.00 & 13097 &  0.688 & 0.530 & 1310\\
 B2        &  4.02~$\pm$~0.08 & 2.77~$\pm$~0.06 & 0.010~$\pm$~0.002 & 0.720$^*$ & 115~$\pm$~8 & 0.000 & 3.77 & 2.00 & 13614 &  0.689 & 0.530 & 1338\\
C6        &  4.01~$\pm$~0.08 & 2.76~$\pm$~0.06 & 0.012~$\pm$~0.002 & 0.720$^*$ & 118~$\pm$~ 9 & 0.200 & 3.77 & 2.00 & 13339 &  0.688 & 0.530 & 1295\\
 C1        &  4.05~$\pm$~0.11 & 2.78~$\pm$~0.08 & 0.018~$\pm$~0.010 & 0.738~$\pm$~10.2 & 131~$\pm$~57 & 0.654 & 3.77 & 2.02 & 12668 &  0.685 & 0.536 & 1305\\
 C4        &  4.04~$\pm$~0.11 & 2.77~$\pm$~0.08 & 0.015~$\pm$~0.007 & 0.740$^*$ & 130~$\pm$~13& 0.355 & 3.77 & 2.02 & 12870 & 0.686 & 0.535 & 1320\\
 C2        &  4.00~$\pm$~0.08 & 2.75~$\pm$~0.06 & 0.013~$\pm$~0.002 & 0.740$^*$ & 131~$\pm$~10& 0.200 & 3.77 & 2.00 & 12978 &  0.687 & 0.530 & 1277\\
 C5        &  4.00~$\pm$~0.08 & 2.75~$\pm$~0.06 & 0.012~$\pm$~0.002 & 0.740$^*$ & 131~$\pm$~1& 0.100 & 3.77 & 2.00 & 13045 & 0.688 & 0.530 & 1293\\
 C7        &  3.99~$\pm$~0.08 & 2.75~$\pm$~0.06 & 0.011~$\pm$~0.002 & 0.740$^*$ & 130~$\pm$~95& 0.050 & 3.77 & 2.00 & 13078 &  0.688 & 0.530 & 1298\\
\hline
\end{tabular}}
\par
\smallskip
$O_i^{\rm obs}$:  $\mathscr M_1=4.04\pm0.11$; $\mathscr R_1=3.77\pm0.03$;  $T_{\rm eff~ 1}=13140\pm1500$; $q=0.674\pm0.009$; $k=0.541\pm0.013$; $\Delta T_{\rm eff}=1096\pm100$ (or $1240\pm100$, see text).\\
For all models $OV_1=0$. Model AC belongs both to group A and C. Several C-type models are listed to illustrate the effect of adjusting $OV_2$. \\
${}^{*)}$ Fixed value.
\end{table}