\begin{table}%t4
\caption{The broad emission lines in AG~Peg spectra.\label{tab4}}
%\centerline
{\begin{tabular}{lc|cccc|ccc} 
\hline\hline
 & &~& \multicolumn{2}{c}{Before 1986} &~&~& \multicolumn{2}{c}{After 1986} \\
Line & IP$^{a}$ &~& {\it FWHM}$^{b}$ & Int$^{c}$ &~&~& {\it FWHM}$^{b}$ & Int$^{c}$  \\  \hline
He II $\lambda$3203       &  24.6 &~&  800 &   394$^{A}$ &~&~&  40 &   550$^{B}$     \\
He II $\lambda$2733       &       &~&  770 &   235$^{A}$ &~&~&  61 &   326$^{B}$     \\
He II $\lambda$2511       &       &~&  790 &   215$^{A}$ &~&~&  40 &   243$^{B}$     \\
He II $\lambda$2385       &       &~&  800 &   207$^{A}$ &~&~&  48 &   300$^{C}$     \\
He II $\lambda$2307       &       &~&  740 &   143$^{A}$ &~&~&  40 &   235$^{C}$     \\
He II $\lambda$1640       &       &~&  770 &  7370$^{D}$ &~&~&  66 & 22~040$^{E}$     \\       
C IV $\lambda$1550        &  47.9 &~&  tcp &   tcp       &~&~&  45 & 24~420$^{E}$     \\
C IV $\lambda$1548        &       &~&  tcp &   tcp       &~&~&  37 & 44~470$^{E}$     \\
N IV $\lambda$1718        &  47.5 &~&  680 &  1443$^{D}$ &~&~& $<$145 &   214$^{F}$  \\    
N IV] $\lambda$1486       &       &~&  tcp &   tcp       &~&~&  32 & 14~200$^{E}$     \\
N V $\lambda$1242         &  77.5 &~&  800 &  4168$^{D}$ &~&~&  56 & 12~570$^{E}$     \\
N V $\lambda$1238         &       &~&  430 &  3529$^{D}$ &~&~&  70 & 19~560$^{E}$    \\
O V $\lambda$2781         &  77.4 &~&  820 &    54$^{A}$ &~&~&  38 &    29$^{C}$     \\  
O V $\lambda$1371         &       &~&  860 &   424$^{G}$ &~&~& $<$83 & 473$^{F}$     \\
Ne III $\lambda$2678      &  41.0 &~&  480 &   128$^{A}$ &~&~&  37 &    28$^{C}$     \\
Si IV $\lambda$1402       &  33.5 &~&  tcp &   tcp       &~&~&  36 &  2439$^{E}$     \\
Si IV $\lambda$1393       &       &~&  tcp &   tcp       &~&~&  37 &  3796$^{E}$     \\
S V $\lambda$1502         &  45.1 &~&  820 &   358$^{G}$ &~&~&     &                 \\
S V] $\lambda$1199        &       &~&  770 &   480$^{G}$ &~&~&  40 &  1066$^{C}$     \\ \hline
unid $\lambda$1266       &       &~&  550 &   858$^{G}$ &~&~&     &                \\                  
unid $\lambda$1260       &       &~&  700 &  1556$^{G}$ &~&~&     &                 \\ 
unid $\lambda$1253       &       &~&  790 &  1469$^{G}$ &~&~&     &                 \\ \hline     
\end{tabular}}
\par
\smallskip
$^{a}$  The ionization potential in eV of the next lower ion.  
$^{b}$  Given in km s$^{-1}$.  
$^{c}$  Peak intensity in units of 10$^{-14}$~erg~cm$^{-2}$~s$^{-1}$~\AA$^{-1}$.    
The indices on the measured intensities stand for: $^{A}$~As measured in LWR05596, $^{B}$~LWP28122, 
$^{C}$~LWP25995, $^{D}$~SWP02326, $^{E}$~SWP55055, $^{F}$~SWP47715, $^{G}$~SWP02334.  
tcp = Two component profile as the spectral line has a narrow emission component superimposed on the broad 
white dwarf wind profile.
\end{table}