\begin{table}%T2
%\centering
\par
\caption{Emission line fluxes and rest-frame 
equivalent widths for the four components. 
Fluxes are expressed in 
$10^{-16}\ {\rm erg}\:{\rm s}^{-1}\:{\rm cm}^{-1}$,
equivalent widths in \AA .}
\label{tab:lines}
\begin{tabular}{lrr@{\hspace{3em}}rr}
\hline\hline\noalign{\smallskip}
 & \multicolumn{2}{c}{\ion{C}{iv} $\lambda$1550 \hspace*{1.5em}} & 
            \multicolumn{2}{c}{\ion{C}{iii}] $\lambda$1909} \\
\noalign{\smallskip}
Component & \multicolumn{1}{c}{$f$} & \multicolumn{1}{c}{$W_0$\hspace*{2em}}   %\hspace*{1.5em}
 & \multicolumn{1}{c}{$f$} & \multicolumn{1}{c}{$W_0$} \\
\noalign{\smallskip}\hline\noalign{\smallskip}
A & 120.1 & 19.2  & 60.3 & 13.5  \\
B &  90.4 & 24.2  & 46.3 & 17.2  \\
C &  86.0 & 26.8  & 42.3 & 16.9  \\
D &  66.2 & 18.3  & 31.7 & 11.8  \\
\hline
\end{tabular}
\end{table}