\begin{table}%t3
\caption{The distribution of emission lines for AG~Peg, according to population processes.\label{tab3}}
%\begin{center}
{\begin{tabular}{lrrrrrc|lrrrrr} \hline\hline
Spec. & \multicolumn{4}{c}{Process$^{a}$} & Tot &~ & Spec. & \multicolumn{4}{c}{Process$^{a}$} & Tot   \\ \cline{2-5} \cline{9-12} 
         &  fl. & rec. & col. & unk & &~&          &  fl. & rec. & col. & unk &  \\ \hline
H I     &       &    1 &      &    & 1  &~&  {[Ne V]}   &      &      &    3 &    &   3 \\
He I    &       &    8 &      &    & 8  &~& Mg II       &      &      &    2 &  7 &   9 \\
He II   &       &   14 &      &    & 14 &~& Mg IV       &      &    7 &      &    &   7 \\
C II    &       &      &    5 &  3 & 8  &~& {[Mg V]}    &      &      &    3 &    &   3 \\
C III   &       &    8 &      &  3 & 11 &~& Al II]      &      &      &    1 &    &   1 \\
C III]  &       &      &    2 &    & 2  &~& Al III      &      &      &    2 &    &   2 \\
C IV    &       &      &    2 &    & 2  &~& Si I        &      &      &      &  5 &   5 \\
N I     &     1 &      &      &  4 & 5  &~& Si II       &      &      &    3 &  5 &   8 \\
N I]    &       &      &    4 &    & 4  &~& Si II]      &      &      &    2 &    &   2 \\
N III   &       &    5 &      &  4 & 9  &~& Si III      &      &      &      &  4 &   4 \\
N III]  &       &      &    5 &    & 5  &~& Si III]     &      &      &    1 &    &   1 \\
N IV    &       &    1 &      &    & 1  &~& Si IV       &      &      &    2 &  5 &   7 \\
N IV]   &       &      &    2 &    & 2  &~& P II        &      &      &    3 &  1 &   4 \\
N V     &       &      &    2 &    & 2  &~& P II]       &      &      &    1 &    &   1 \\
O I     &       &      &    2 &    & 2  &~& P III       &      &      &    2 &    &   2 \\
O I]    &       &      &      &  2 & 2  &~& P IV        &      &      &      &  1 &   1 \\
O III   &    16 &    6 &      &    & 22 &~& P IV]       &      &      &    1 &    &   1 \\
O III]  &     1 &    1 &    3 &  2 & 7  &~& S I         &    1 &      &    5 &    &   6 \\
{[O III]} &     &      &    1 &    & 1  &~& S I]        &      &      &    1 &    &   1 \\
O IV    &       &    3 &      &  2 & 5  &~& S II]       &      &      &    1 &    &   1 \\       
O IV]   &       &    5 &      &    & 5  &~& S IV]       &      &      &    5 &    &   5 \\
O V     &       &    3 &      &  1 & 4  &~& S V         &      &      &      &  1 &   1 \\
O V]    &       &      &      &  1 & 1  &~& S V]        &      &      &      &  1 &   1 \\
O VI    &       &      &    2 &    & 2  &~& {[Ar V]}    &      &      &    1 &    &   1 \\
Ne III  &       &    8 &      &    & 8  &~& Fe II$^{*}$ & 226  &    3 &   85 & 32 & 346 \\
Ne III] &       &    2 &      &    & 2  &~& Fe III      &   3  &      &      & 11 &  14 \\ 
{[Ne III]}&     &      &    1 &    & 1  &~& Fe V        &      &    4 &      &    &   4 \\
{[Ne IV]}&      &      &    4 &    & 4  &~& {[Fe VI]}   &      &      &    2 &    &   2 \\
Ne V]   &       &      &    2 &    & 2  &~& Co II$^{*}$ &   5  &      &      &  6 &  11 \\ \hline
\end{tabular}}
\parbox{12cm}{
$^{*}$ Spin-forbidden transitions are also included. \\
$^{a}$  fl = fluorescence;  rec = recombination;  col = collision;  unk = unknown.}
%\end{center}
\par
\end{table}