\begin{table}%t1
\caption{\label{tab:lis}\label{tab1}Spectral features used in the  abundance analysis. 
Main contributing ions are indicated. For each binary component, the  
equivalent width $W$ of all the absorption over the spectral interval 
specified in Cols.~2 and~4 is given in Cols.~3 and~5. The values 
between brackets are the corresponding $W$ measured in the \#201~spectrum 
blurred to the rotation velocity of component~A resp.~B (and in~\#180, 
behind the semicolon in the fourth column). }
%\centerline
$${
\begin{tabular}{l|cr@{ }r@{ ; }r|cr@{ }r}
\hline\hline
Contributing ions & $\Delta\lambda_{\rm A}$ & 
\multicolumn{3}{l|}{$W_{\rm A}$} & 
$\Delta\lambda_{\rm B}$ & \multicolumn{2}{l}{$W_{\rm B}$} \\
 & \AA  & \multicolumn{3}{l|}{m\AA}  & \AA  & \multicolumn{2}{l}{m\AA}  \\
 \hline 
O~{\sc ii} + C~{\sc iii} & 4066.31--4073.90 & 427 & (325 & 433) & 4067.14--4073.60 & 277 & (324) \\  
O~{\sc ii}     & 4073.90--4080.71 & 261 & (239 & 183) & 4073.60--4080.71 & 248 & (245)  \\
O~{\sc ii} (C~{\sc iii}) &  & $-$ & ($-$ & $-$) & 4188.13--4191.32 &  114 & (100) \\
Si~{\sc iv}    & 4210.25--4214.50 & 40 & ($<$16 & 63)   &  & $-$ &($-$) \\
C~{\sc ii}     & 4264.80--4269.20 & 108 & (122 & 59) & 4265.60--4269.20 & 139 & (123) \\ 
O~{\sc ii}     & 4273.70--4279.65 & 199 & (213 & 118) & 4273.70--4279.23 & 213 & (211) \\ 
Mg~{\sc ii} + Al~{\sc iii} & 4479.15--4483.30 & 121 & (143 & 136) & 4479.66--4482.40 & 140 & (129) \\ 
Si~{\sc iii} + N~{\sc ii} & 4550.13--4555.15 & 162 & (159 & 101) & 4550.13--4554.54 & 167 & (156) \\ 
Si~{\sc iii}   & 4565.60--4570.05 & 135 & (153 & 98) & 4566.07--4569.76 & 137 & (150) \\ 
Si~{\sc iii}   & 4572.55--4577.05 & 87 & (99 & 48$^1$) & 4572.70--4576.97 & 83 & (99) \\ 
O~{\sc ii} (N~{\sc iii}) & 4588.70--4593.10 & 104 & (117 & 84) & 4589.07--4592.64 & 100 & (113) \\ O~{\sc ii}     & 4593.80--4598.56 & 105 & (115 & 50) & 4594.32--4598.56 & 117 & (112) \\ 
O~{\sc ii} + N~{\sc ii} (N~{\sc iii}) & 4605.00--4611.85 & 98 & (101 & 60) & 4605.35--4611.67 & 112 & (99) \\ 
O~{\sc ii} + N~{\sc ii} + N~{\sc iii} & 4636.35--4644.95 & 291 & (251 & 261) & 4636.50--4644.86 & 291 & (252) \\ 
O~{\sc ii} + C~{\sc iii} + Si~{\sc iv}$^2$ & 4645.05--4656.40 & 653 & (475 & 871) & 4644.86--4652.90 & 379 & (438) \\ 
O~{\sc ii}     & 4659.35--4663.60 & 103 & (99 & 89$^3$) & 4659.75--4663.28 & 93 & (97) \\
\hline
\end{tabular}}$$
Notes: \\
$^1$ With contribution from weak, unidentified line at $\lambda$4573.2. \\
$^2$ Only in the $\Delta\lambda_{\rm A}$ interval.  \\
$^3$ Weak C~{\sc iii} lines at edges of interval contribute partly.
\end{table}