\begin{table}%t2
\caption{Ions and the number of their excitation states considered for the
calculation of \hvezda\ model atmospheres.}
\label{ionty}
%\centering
\small
\begin{tabular}{lrlrlrlr}
\hline\hline
Ion & Levels & Ion & Levels  & Ion & Levels & Ion & Levels  \\
\hline
\ion{H}{i}   &   9&\ion{N}{i}   & 21 &\ion{Ne}{i}  & 15 &\ion{Si}{ii}  & 40 \\
\ion{H}{ii}  &  1 &\ion{N}{ii}  & 26 &\ion{Ne}{ii} & 15 &\ion{Si}{iii} & 30 \\
\ion{He}{i}  & 24 &\ion{N}{iii} & 32 &\ion{Ne}{iii}& 14 &\ion{Si}{iv}  & 23 \\
\ion{He}{ii} & 20 &\ion{N}{iv}  &   1&\ion{Ne}{iv} &   1&\ion{Si}{v}   &   1\\
\ion{He}{iii}&   1&\ion{O}{i}   & 12 &\ion{Mg}{i}  & 13 &\ion{S}{ii}  & 14 \\
\ion{C}{i}   & 26 &\ion{O}{ii}  & 13 &\ion{Mg}{ii} & 14 &\ion{S}{iii} & 10 \\
\ion{C}{ii}  & 14 &\ion{O}{iii} & 29 &\ion{Mg}{iii}& 14 &\ion{S}{iv}  & 15 \\
\ion{C}{iii} & 12 &\ion{O}{iv}  &   1&\ion{Mg}{iv} &   1&\ion{S}{v}   &   1\\
\ion{C}{iv} &     1 \\
\hline
\end{tabular}
\end{table}