\begin{table}%t4
%\centering
\par
\caption{Line ratios for Cen X-4 and template stars.\label{ratio}}
\begin{tabular}{cccc}
\hline\hline
Template   &  Spectral type  & 6361(FeII)/    & 6494(FeII)/ \\
	   &                 & 6161 (TiO)     & 6161 (TiO)  \\
\hline		
Cen X-4    &                 & $0.41\pm0.06$  &$0.52\pm0.06$\\
%err		0.05754		0.11974		0.06277
%perc		0.13995		0.15071		0.12131
\hline
HR 5536    &  K3 III         & 1.43	      &1.52 \\
HR 6159    &  K4 III         & 1.59	      &1.88 \\
HR 5622    &  K5 III         & 0.76	      &0.86 \\
HD 184467  &  K7 III         & 0.68	      &0.78 \\
HD 29697   &  K3 V           & 0.18	      &0.44 \\
HD 154712A &  K4 V           & 0.12	      &0.51 \\
61 Cyg A   &  K5 V           & 0.33	      &0.52 \\
61 Cyg B   &  K7 V           & 0.50	      &0.56 \\
\hline
\end{tabular}
\end{table}