\begin{tabular}{|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|} 
 	\hline 
	\includegraphics[scale=0.05]{\figdir/two9.eps} &
	\includegraphics[scale=0.05]{\figdir/two7.eps} &
	\includegraphics[scale=0.05]{\figdir/two2.eps} &
	\includegraphics[scale=0.05]{\figdir/two10.eps} &
	\includegraphics[scale=0.05]{\figdir/two1.eps} &
	\includegraphics[scale=0.05]{\figdir/two5.eps} &
	\includegraphics[scale=0.05]{\figdir/two4.eps} &
	\includegraphics[scale=0.05]{\figdir/two3.eps} &
	\includegraphics[scale=0.05]{\figdir/two8.eps} &
	\includegraphics[scale=0.05]{\figdir/eight8reverse.eps} &
	\includegraphics[scale=0.05]{\figdir/U7reverse.eps} &
	\includegraphics[scale=0.05]{\figdir/three10.eps} &
	\includegraphics[scale=0.05]{\figdir/seven4.eps} &
	\includegraphics[scale=0.05]{\figdir/seven10.eps} &
	\includegraphics[scale=0.05]{\figdir/seven9.eps} &
	\includegraphics[scale=0.05]{\figdir/three7.eps} &
	\includegraphics[scale=0.05]{\figdir/U5.eps} &
	\includegraphics[scale=0.05]{\figdir/U1.eps} &
	\includegraphics[scale=0.05]{\figdir/seven5.eps} &
	\includegraphics[scale=0.05]{\figdir/U6.eps} &
	\includegraphics[scale=0.05]{\figdir/U2.eps} &
	\includegraphics[scale=0.05]{\figdir/U8upsidedown.eps} &
	\includegraphics[scale=0.05]{\figdir/U4.eps} &
\\ \hline 
 	 - & 3.1 & 3.2 & 3.7 & 4.0 & 4.1 & 4.2 & 4.3 & 4.6 & 9.6 & 10.6 & 11.4 & 12.4 & 12.6 & 12.7 & 15.3 & 15.4 & 15.6 & 15.8 & 16.0 & 16.0 & 16.2 & 16.2 \\ \hline 
\end{tabular}