\begin{table}%t12
\caption{Preliminary set of \ion{O}{ii} lines selected for the analysis, divided by multiplets. The spectrum of the low \vsini~star $\tau$~Sco was used to identify the lines. The log~{\em gf}~values are from the NIST~database.}\label{LinesO12}
%\centering
\par
\begin{tabular}{c c r c}    
\hline
\hline
\\[-11pt]
Label & $\lambda$ ({\rm \AA}) & log~{\em gf} & Notes \\
\hline
\multicolumn{4}{l}{2s$^2$ 2p$^2$ (3P) 3p--2s$^2$ 2p$^2$ (3P) 3d} \\
\hline
 & & \multicolumn{2}{r}{NIST 90 (4D$_0$--4F)}\\
\hline
\ion{O}{ii}~4069 & 4069.623 & 0.149  & + \ion{C}{iii} \\
                  & 4069.882 & 0.344  &   \\
\ion{O}{ii}~4072 & 4072.153 & 0.552  &   \\
\ion{O}{ii}~4076 & 4075.862 & 0.693  & + \ion{C}{ii}\ \\
\ion{O}{ii}~4078 & 4078.842 & --0.284 &   \\
\hline
 & & \multicolumn{2}{r}{NIST 118 (2D$_0$--2F)} \\
\hline
\ion{O}{ii}~4699 & 4699.218  & 0.269  &  \\
                  & (4699.011 & 0.418) &  NIST 172\\
                  & (4698.437 & --0.883) & NIST 172 \\
\ion{O}{ii}~4705 & 4705.346  & 0.477  &  \\
\ion{O}{ii}~4741 & 4741.704  & --0.987 & Very weak  \\
\hline
 & & \multicolumn{2}{r}{NIST 130 (4S$_0$--4P)} \\
\hline
\ion{O}{ii}~4891 & 4890.856 & --0.436 &  \\
\ion{O}{ii}~4906 & 4906.830 &--0.160  &  \\
\hline
 & & \multicolumn{2}{r}{NIST 148 (2P$_0$--2D)} \\
\hline
\ion{O}{ii}~4941 & 4941.072 & --0.054 &  \\
\ion{O}{ii}~4943 & 4943.005 & 0.239  &  \\
\ion{O}{ii}~4956 & 4955.707 & --0.573 & Very weak \\
\hline
\multicolumn{4}{l}{2s$^2$ 2p$^2$ (3P) 3s--2s$^2$ 2p$^2$ (3P) 3p}\\
\hline
 & & \multicolumn{2}{r}{NIST 64 (4P--4D$_0$)} \\
\hline
\ion{O}{ii}~4638 & 4638.856 & --0.332 & + \ion{C}{ii} + \ion{Si}{iii}\\
\ion{O}{ii}~4641 & 4641.810 & 0.054  & + \ion{N}{iii}\\
\ion{O}{ii}~4650 & 4649.135 & 0.308  & \\
\ion{O}{ii}~4651 & 4650.638 & --0.362 & \\
\ion{O}{ii}~4661 & 4661.632 & --0.278 & \\
\ion{O}{ii}~4673 & 4673.733 & --1.088 & \\
\ion{O}{ii}~4676 & 4676.235 & --0.394 & \\
\ion{O}{ii}~4696 & 4696.352 & --1.380 & \\
\hline
 & & \multicolumn{2}{r}{NIST 65 (4P--4P$_0$)}\\
\hline
\ion{O}{ii}~4317 & 4317.139 & --0.386 &  \\
                  & 4317.696 & ...    &  \\
\ion{O}{ii}~4319 & 4319.630 & --0.380 &  + \ion{N}{iii}\\
                  & 4319.866 & --0.502 &  \\
\ion{O}{ii}~4366 & 4366.895 & --0.348 &  \\
                  & 4366.530 & ...    &  \\
\hline
 & & \multicolumn{2}{r}{NIST 72 (2P--2D$_0$)}\\
\hline
\ion{O}{ii}~4414 & 4414.899 & 0.172  &  \\
                  & 4414.456 & --1.483 &  \\
\ion{O}{ii}~4416 & 4416.975 & --0.076 & + \ion{Si}{iv} \\
\ion{O}{ii}~4452 & 4452.378 & --0.789 &  \\
\hline
\end{tabular}
\end{table}