\begin{table}%t4
%\centering
\par
\caption{Line transitions of the O~I model atom: Lower level number 
(Low), upper level number (Up), wavelength and $\log gf$-value (Wiese et~al. \cite{Wie96}).}\label{oitransitions}
\scriptsize
\begin{tabular}{rrrrrrrr}
\hline\hline
Low   & Up    &  $\lambda~[\rm \AA]$ & $\log gf$ & Low   & Up    &  $\lambda~[\rm \AA]$ & $\log gf$~~\\[2mm]
\cline{1-8}
 1  &  2 &   6333.79 &  $-$9.652 &  7  & 16 & 7256.4    &  $-$0.799~\\
 1  &  3 &   2972.29 & $-$10.478 &  7  & 19 & 7004.1    &  $-$0.410~\\
 1  &  4 &   1355.60 &  $-$5.238 &  7  & 25 & 6048.1    &  $-$1.286~\\
 1  &  5 &   1303.5  &  $-$0.330 &  7  & 27 & 5960.2    &  $-$1.140~\\
 1  &  9 &   1040.1  &  $-$1.084 &  8  & 12 &27637.0    &   0.868~\\
 1  & 11 &   1026.6  &  $-$0.743 &  8  & 22 &12267.0    &  $-$1.100~\\
 1  & 14 &  989.46   &  $-$0.303 &  9  & 12 &34850.8    &  $-$4.248~\\
 1  & 16 &  977.19   &  $-$1.527 &  9  & 13 &28927.0    &   0.666~\\
 1  & 17 &  974.07   &  $-$4.108 &  9  & 23 &13077.0    &  $-$1.180~\\
 1  & 19 &  972.47   &  $-$0.906 & 10  & 20 &18021.0    &   1.401~\\
 1  & 25 &  951.59   &  $-$1.849 & 10  & 22 &16110.0    &  $-$1.628~\\
 1  & 27 &  949.39   &  $-$1.246 & 10  & 28 &12511.0    &   0.606~\\
 2  &  3 &   5577.34 &  $-$8.930 & 11  & 13 &45596.0    &   0.442~\\
 2  &  5 & 1641.305  &  $-$5.654 & 11  & 21 &18244.0    &   1.188~\\
 2  & 14 & 1172.504  &  $-$4.512 & 11  & 23 &15666.0    &  $-$1.218~\\
 2  & 17 & 1152.15   &  $-$0.280 & 11  & 29 &12570.0    &   0.380~\\
 3  &  5 & 2325.452  &  $-$7.950 & 12  & 15 &33075.0    &   0.655~\\
 4  &  6 &   7773.4  &   0.700 & 12  & 18 &26507.0    &   1.231~\\
 4  &  7 & 6728.16   &  $-$4.398 & 12  & 19 &26207.0    &  $-$3.215~\\
 4  & 12 &   3947.4  &  $-$1.766 & 12  & 24 &16872.0    &  $-$0.371~\\
 5  &  6 &10167.3    &  $-$4.553 & 12  & 26 &15891.0    &   0.261~\\
 5  &  7 &   8446.5  &   0.492 & 13  & 16 &36607.0    &   0.463~\\
 5  & 13 &   4368.2  &  $-$1.709 & 13  & 18 &31393.6    &  $-$3.142~\\
 5  & 23 & 3693.4    &  $-$2.767 & 13  & 19 &30977.0    &   1.037~\\
 6  &  8 &  11299.0  &   0.407 & 13  & 25 &18229.0    &  $-$0.594~\\
 6  & 10 &   9263.9  &   1.156 & 13  & 27 &17453.0    &  $-$0.092~\\
 6  & 11 & 9207.46   &  $-$3.831 & 14  & 21 &54557.28   &  $-$2.260~\\
 6  & 15 &   6455.0  &  $-$0.589 & 14  & 23 &36666.0    &  $-$1.328~\\
 6  & 18 &   6157.3  &   0.034 & 14  & 29 &23259.0    &  $-$1.131~\\
 6  & 19 & 6142.28   &  $-$4.420 & 18  & 20 &973302.0   &  $-$2.467~\\
 6  & 24 & 5437.7    &  $-$1.067 & 18  & 22 &131395.0   &  $-$0.136~\\
 6  & 26 & 5331.5    &  $-$0.540 & 18  & 28 &38808.0    &   1.326~\\
 7  &  9 &  13165.0  &   0.222 & 19  & 23 &103975.7   &  $-$0.229~\\
 7  & 10 &11374.0    &  $-$3.861 & 19  & 29 &39463.0    &   1.126~\\
 7  & 11 &  11299.0  &   0.407 & 20  & 26 &33135.0    &  $-$0.288~\\
 7  & 14 & 7992.0    &  $-$2.094 &     &    &           &        ~\\
\hline
\end{tabular}
\end{table}