\begin{table}%t5
\caption{\label{targetlevels}Level energies of the three energetically lowest configurations in Rydberg.}
\par
%\centering
\par
\begin{tabular}{llllllllll}
\hline\hline\noalign{\smallskip}
 & Index & \multicolumn{2}{c}{Level} & Exp.\tablefootmark{\dagger} & 72CF  &
72CF & GT\tablefootmark{a} & AK\tablefootmark{b} & Target\\
 &             &             &       & & (ab initio) & (with TEC)  &         \\
\hline\noalign{\smallskip}
 & 1 & 3s$^2~$3p$^2$  & {$^{3}${P}$_{0}$}   &   0.      & 0.       & 0.  & 0.  & 0. & 0. \\
 & 2 &                 & {$^{3}${P}$_{1}$}   &   0.0848  & 0.0832   & 0.0836   & 0.0768 & 0.0835 & 0.0808  \\
 & 3 &                 & {$^{3}${P}$_{2}$}   &   0.1692  & 0.1673   & 0.1672   & 0.1582 & 0.1700 & 0.1657  \\
 & 4 &                 & {$^{1}${D}$_{2}$}   &   0.4380  & 0.4416   & 0.4366   & 0.4366 & 0.4629 &  0.4516  \\
 & 5 &                 & {$^{1}${S}$_{0}$}   &   0.8339  & 0.8436   & 0.8324   & 0.8612 & 0.8497 & 0.8512  \\
 & 6 & 3s~3p$^3$      & {$^{5}${S}$^{\rm {o}}_{2}$}   &   1.9558  & 1.9275   & 1.9544   &        & 1.9719 &  1.9144  \\
 & 7 &                 & {$^{3}${D}$^{\rm {o}}_{1}$}   &   2.6172  & 2.6170   & 2.6164   & 2.5978 & 2.7427 &  2.6099  \\
 & 8 &                 & {$^{3}${D}$^{\rm {o}}_{2}$}   &   2.6186  & 2.6180   & 2.6174   & 2.5982 & 2.7437 & 2.6111  \\
 & 9 &                 & {$^{3}${D}$^{\rm {o}}_{3}$}   &   2.6443  & 2.6423   & 2.6424   & 2.6212 & 2.7683 & 2.6363  \\
 & 10 &                 & {$^{3}${P}$^{\rm {o}}_{0}$}   &   2.9974  & 3.0099   & 2.9973   & 2.9906 & 3.1533 & 2.9968  \\
 & 11 &                 & {$^{3}${P}$^{\rm {o}}_{1}$}   &   3.0045  & 3.0157   & 3.0032   & 2.9956 & 3.1595 & 3.0031 \\
 & 12 &                 & {$^{3}${P}$^{\rm {o}}_{2}$}   &   3.0098  & 3.0205   & 3.0079   & 2.9910 & 3.1649 & 3.0081  \\
 & 13 &                 & {$^{1}${D}$^{\rm {o}}_{2}$}   &   3.3025  & 3.3305   & 3.3011   & 3.2968 & 3.5222 & 3.3192  \\
 & 14 &                 & {$^{3}${S}$^{\rm {o}}_{1}$}   &   3.7860  & 3.8575   & 3.7846   & 3.8390 & 4.1498 & 3.8327  \\
 & 15& 3s$^2$~3p~3d  & {$^{3}${F}$^{\rm {o}}_{2}$}   &   3.9435  & 3.9621   & 3.9403   & 3.9906 &  4.1285 & 3.9723  \\
 & 16 & 3s~3p$^3$      & {$^{1}${P}$^{\rm {o}}_{1}$}   &   3.9918  & 4.0554   & 3.9903   & 4.0348 & 4.3144 & 4.0452  \\
 & 17 & 3s$^2$~3p~3d  & {$^{3}${F}$^{\rm {o}}_{3}$}   &   4.0043  & 4.0239   & 4.0023   & 4.0500 &  4.1901 & 4.0338  \\ 
 & 18 &                 & {$^{3}${F}$^{\rm {o}}_{4}$}   &   4.0880  & 4.1150   & 4.0937   & 4.1366 &  4.2822 & 4.1234  \\ 
 & 19 &                 & {$^{3}${P}$^{\rm {o}}_{2}$}   &   4.4321  & 4.4985   & 4.4370   & 4.4884 &  4.7668 & 4.5055  \\ 
 & 20 &                 & {$^{3}${P}$^{\rm {o}}_{1}$}   &   4.5103  & 4.5708   & 4.5124   & 4.5594 &  4.8245 & 4.5794  \\ 
 & 21 &                 & {$^{1}${D}$^{\rm {o}}_{2}$}   &   4.5461  & 4.6116   & 4.5475   & 4.5960 &  4.9284 & 4.6165  \\ 
 & 22 &                 & {$^{3}${P}$^{\rm {o}}_{0}$}   &   4.5702  & 4.6264   & 4.5722   & 4.6076 &  4.8765 & 4.6295  \\ 
 & 23 &                 & {$^{3}${D}$^{\rm {o}}_{1}$}   &   4.6156  & 4.6761   & 4.6150   & 4.6642 &  4.9392 & 4.6875  \\
 & 24 &                 & {$^{3}${D}$^{\rm {o}}_{3}$}   &   4.6400  & 4.7051   & 4.6402   & 4.6968 &  4.9694 & 4.7210  \\ 
 & 25 &                 & {$^{3}${D}$^{\rm {o}}_{2}$}   &   4.6407  & 4.7033   & 4.6407   & 4.6918 &  4.9689 & 4.7162  \\ 
 & 26 &                 & {$^{1}${F}$^{\rm {o}}_{3}$}   &   5.0746  & 5.1565   & 5.0731   & 5.2120 &  5.4286 & 5.1790  \\ 
 & 27 &                 & {$^{1}${P}$^{\rm {o}}_{1}$}   &   5.2006  & 5.2901   & 5.1991   & 5.2694 &  5.5975 & 5.3016  \\[2pt] 
\hline
\end{tabular}
\tablefoot {\tablefoottext{\dagger}{\citet{jupen_etal:93, martin_etal:95, penn_kuhn:94};}
\tablefoottext{a}{\citet{guptatayal:98};} 
\tablefoottext{b}{\citet{aggkeen:04}.}}
\end{table}