\begin{table}%t1
\centering
 \caption{Characteristics of the investigated O III transitions. $J_f$ and $J_i$ are the inner quantum
numbers of the final $(f)$ and initial $(i)$ state of the transition. $E_i$ and $g_i$ represent initial energy levels
and their statistical weights. Atomic data are taken from NIST (\cite{NIST03}).  \label{tab1}}
\vskip 0.8mm \moveright 0.8in\vbox{\offinterlineskip \hrule\vskip 0.5mm\hrule
\halign{&\vrule#& \strut\hbox to1.55pt{}\hfil#\hbox to1.55pt{}\cr
%  \strut\hbox to1pt{}\hfil#\hbox to1pt{}\hrule\cr
&\omit&&\omit&&\omit&&\omit&\cr
&Multiplet\hfil&&$\lambda$\hfil&&$E_i$\hfil&&\hfil$g_i$\hfil&\cr
&\omit&&\omit&&\omit&&\omit&\cr &$J_f -
J_i$\hfil&&(nm)\hfil&&(eV)&& &\cr &\omit&&\omit&&\omit&&\omit&\cr
&\omit&&\omit&&\omit&&\omit&\cr\noalign{\hrule}
 &$3{\rm p}\ {^3{\rm S}} - 3{\rm d}\ {^3{\rm P}^{\rm o}}$\hfil&&
&& && &\cr   &\omit&&\omit&&\omit&&\omit&\cr 
&1 $-$
2\hfil&&313.279&&40.85&&5\hfil&\cr  
&\omit&&\omit&&\omit&&\omit&\cr &1 $-$
1\hfil&&312.163&&40.86&&3\hfil &\cr  
height3pt&\omit&&\omit&&\omit&&\omit&\cr &1 $-$
0\hfil&&311.567&&40.87&&1\hfil &\cr  
height3pt&\omit&&\omit&&\omit&&\omit&\cr &$3{\rm p}\ {^3\rm P} - 3{\rm d}\
{^3{\rm P}^{\rm o}}$\hfil&& && && &\cr  &1 $-$
2\hfil&&342.863&&40.85&&5\hfil &\cr
height3pt&\omit&&\omit&&\omit&&\omit&\cr &2 $-$
2\hfil&&344.405&&40.85&&5\hfil &\cr } \hrule}
\end{table}