\begin{table}%T3
\caption{Equivalent widths, {\it FWHM} and fluxes of the strongest lines.}
\label{lines}
%\centerline
{
\begin{tabular}{lrrrrrr}
\hline \hline
Line & {\it EW}(\AA) & {\it FWHM}(\AA) &  Flux(*)  & {\it EW}(\AA) & {\it FWHM}(\AA) &  Flux(*)  \\
\multicolumn{1}{c}{ } &\multicolumn{3}{c}{August 1998} &\multicolumn{3}{c}{July 2004}\\
\hline 
H$_\delta$        & 2.9(3)  & 7.2    &  56   &--         &--       & --    \\
H$_\gamma$        & 3.9(2)  & 7.5    &  73   & 4.2(2)   & 7.3    & 136  \\
HeI 4471          & 1.0(1)  & 7.5    & 17    & 0.9(1)   & 6.2    &  30  \\
CIII-NIII(+)      & 2.0(1)  & 21.3   &  36   & 2.3(2)   & 26.9   &  71  \\
HeII 4686(+)      & 5.9(1)  & 10.6   & 110   & 5.7(2)   & 10.5   & 182  \\
H$_\beta$         & 6.1(3)  &  8.5   & 109   & 6.4(3)   & 8.0    & 201  \\
HeII 5411         & 1.5(3)  & 12.8   & 23    & 1.4(2)   & 15.2   &  42  \\
HeI 5875(+)       &  2(2)   & 8.1    & 32    & 2.0(2)   &  7.9   &  55  \\
H$_\alpha$        & 16.5(4) & 10.7   &  252  & --        & --      & --    \\
\hline
\end{tabular}}
\medskip
 Errors bars on last digit in parentheses. \\
 {\it FWHM}: corrected for instrumental resolution (typical errors of 0.6~\AA{} in~1998 and~0.3~\AA{} in 2004). \\
 * Line flux in units of 10$^{-16}$ \ecs ~are indicative because of marginal photometric conditions. \\
{(+) Measurements derived from Gaussian fits.}
\end{table}