\begin{table}%t2
\caption{\label{tab:allcontours}All $68\%$, and $95\%$ confidence level contours for Model~$1$. Full lines represent the $\rm \Lambda CDM$~values $\{w_0,w_a,\beta_1\}=\{-1,0,0\}$ and the $(w_0+w_{{a}})=0$ constraint.}
%\centering
\small
\begin{tabular}{rcccccc}
\hline
\hline
\multicolumn{1}{c|}{} &  \multicolumn{1}{c|}{\begin{small}$ \Omega_{{\rm M}}~\times~w_0 $\end{small}} & \multicolumn{1}{c|}{\begin{small}$ \Omega_{{\rm M}}~\times~w_a $\end{small}} & \multicolumn{1}{c|}{\begin{small}$w_0~\times~w_a$\end{small}} & \multicolumn{1}{c|}{\begin{small}$ w_0~\times~\beta_1 $\end{small}}  & \multicolumn{1}{c|}{\begin{small}$\Omega_{{\rm M}}~\times~\beta_1$\end{small}} & \multicolumn{1}{c}{\begin{small}$ w_a~\times~\beta_1 $\end{small}} \\
\hline
\multicolumn{1}{c|}{} & & & & & & \\
\multicolumn{1}{c|}{\textbf{i)}}          &  \includegraphics[width=3.5cm]{Gph13tb2.eps} & & & & &  \\[1ex]
\multicolumn{1}{c|}{\textbf{ii)}}          &  \includegraphics[width=3.5cm]{Gph1tb2.eps} &  \includegraphics[width=3.5cm]{Gph2tb2.eps} & \includegraphics[width=3.5cm]{Gph3tb2.eps} & & &  \\[1ex]
\multicolumn{1}{c|}{\textbf{a)}}          & \includegraphics[width=3.5cm]{Gph10tb2.eps} & &  & \includegraphics[width=3.5cm]{Gph12tb2.eps} & \includegraphics[width=3.5cm]{Gph11tb2.eps} &  \\[1ex]
\multicolumn{1}{c|}{\textbf{b)}}          & \includegraphics[width=3.5cm]{Gph5tb2.eps} & \includegraphics[width=3.5cm]{Gph9tb2.eps} & \includegraphics[width=3.5cm]{Gph7tb2.eps} & \includegraphics[width=3.5cm]{Gph6tb2.eps} & \includegraphics[width=3.5cm]{Gph4tb2.eps} &  \includegraphics[width=3.5cm]{Gph8tb2.eps} \\[3ex]
\multicolumn{1}{c|}{}& & & & & & \\
\hline
\end{tabular}
\end{table}