\begin{table}%t1
%\centering
\par
\caption{Model atmospheres computed for different magnetic field strengths. \label{tbl1}}
%\begin{flushleft}
\begin{tabular}{lc|lc}
\hline
\hline
Model  &  $B_{\rm eq}$ & Model  &  $B_{\rm eq}$\\
No.    &  (G)          & No.    &  (G) \\
\hline
~~1  & 3   &  ~~10 & 500      \\
~~2  & 5   &  ~~11 & 750      \\
~~3  & 10  &  ~~12 & 1000   \\
~~4  & 25  &  ~~13 & 3000   \\
~~5  & 50  &  ~~14 & 6000   \\
~~6  & 100 &  ~~15 & 12~000  \\
~~7  & 200 &  ~~16 & 18~000  \\
~~8  & 300 &  ~~17 & 25~000  \\
~~9  & 400 &  ~~18 & 50~000  \\
\hline
\end{tabular}
%\end{flushleft}
\end{table}