\begin{table}%t6
\caption {$\sigma/I$ for the strongest lines present in HD~45166. Both~$\sigma$ and~$I$ were measured at the centroid of the lines.  
\label{sigmai} }
%\centering
\par
\begin{tabular}{c c c}
\hline\hline 
Ion & Line & $\sigma/I$ (\%)\\
\hline
\ion{H}{i}~+~\ion{He}{ii}   &  4861  &    2.0\\
\ion{H}{i}~+~\ion{He}{ii}   &  6563  &    2.2\\
\ion{He}{i}		  &  5876  &    2.6\\
\ion{He}{i}		  &  6678  &    2.1\\
\ion{He}{ii}		  &  4541  &    1.6\\
\ion{He}{ii} 		  &  4686  &    1.5\\
\ion{He}{ii}		  &  6527  &    1.4\\
\ion{He}{ii}		  &  6683  &    1.3\\
\ion{C}{iv}		  &  5801  &    1.6\\
\ion{C}{iv}		  &  5812  &    1.5\\
\ion{C}{iii}		  &  4647  &    1.9\\
\ion{N}{iii}		  &  4510  &    1.1\\
\ion{N}{iii}		  &  4640  &    1.9\\
\hline
\end{tabular}
\end{table}