\begin{table}%t1
\caption{\label{TAB1}Data of the helium I atomic structure used in this work.}
\small%\centerline
 {
\begin{tabular}{ccccc}
\hline\hline
 Config. & Term & $E_i^{\;\;*}$ & $E_k$ & $S_{ik}$ \\[2pt]
\hline
&&&& \\[-8pt]
   1s4s--1s4p & $^3$S--$^3$P$^{\rm o}$ & 190~298.11 & 191~217.06 & 1.30e+03 \\
   1s4p--1s4d & $^3$P$^{\rm o}$--$^3$D & 191~217.06 & 191~444.48 & 2.61e+03 \\
   1s4d--1s4f & $^3$D--$^3$F$^{\rm o}$ & 191~444.48 & 191~451.88 & 2.09e+03 \\
\hline
\end{tabular}}
\medskip
$^*$ The energies $E_i$ and $E_k$ are given in cm$^{-1}$ and $S_{ik}$ in atomic units.  These data have been taken from \url{http://physics.nist.gov/PhysRefData/ASD/lines_form.html}.
\end{table}