\begin{table}%t1
    \caption{\label{T1}Experimental Stark halfwidths of Xe~II lines.}
    \small%\centering
\par
    \begin{tabular}{rcccrrrrr}
 \hline  \hline\noalign{\smallskip}
No.&Configurations                                     &Terms                           &Wavelength&$w_{\rm m}$ Acc&$w_{\rm m}$&$w_{\rm m}$/$w_{\rm calc}$&$w$&Ref.\\
\par
   &                                                   &                                &(nm)&(pm)&($10^{11}$~s$^{-1}$)&             &(pm)    &   \\
\par
    \noalign{\smallskip}\hline\noalign{\smallskip}
\par
1. &${\rm 5p^4(^3P_2)6s{-}5p^4(^3P_1)6p}$ &${\rm [2]_{5/2}{-}[2]^o_{5/2}}$ &332.746 &22.1 A &3.76 &1.18 & &\\
\par
 & &${\rm [2]_{3/2}{-}[2]^o_{5/2}}$ &356.430 &26.9 B &3.99 &1.26 & &\\
\par
2. &${\rm 5p^4(^3P_2)5d{-}5p^4(^3P_2)6p}$ &${\rm [2]_{5/2}{-}[1]^o_{3/2}}$ &467.456 &47.7 B &4.11 & & &\\
\par
3. &${\rm 5p^4(^3P_1)5d{-}5p^4(^3P_1)6p}$ &${\rm  [1]_{3/2}{-}[2]^o_{3/2}}$ &651.283 &98.4 A &4.37 & & &\\
\par
4. &${\rm 5p^4(^3P_2)5d{-}5p^4(^3P_1)6p}$ &${\rm  [0]_{1/2}{-}[1]^o_{1/2}}$ &536.807 &53.6 B &3.50 & &38.85 &BBDa\\
\par
 & & & & & & &69.24 &GMPR\\
\par
5. &${\rm 5p^4(^3P_2)5d{-}5p^4(^1D_2)6p}$ &${\rm  [0]_{1/2}{-}[2]^o_{3/2}}$ &384.858 &22.4 C &2.85 & & &\\
\par
6. &${\rm 5p^4(^3P_0)5d{-}5p^4(^1D_2)6p}$ &${\rm [2]_{5/2}{-}[3]^o_{7/2}}$ &453.249 &33.9 B &3.11 & &38.89 &LAM\\
\par
7. &${\rm 5p^4(^3P_0)5d{-}5p^4(^1D_2)6p}$ &${\rm [2]_{5/2}{-}[2]^o_{5/2}}$ &413.101 &48.6 B &5.37 & & &\\
\par
8. &${\rm 5p^4(^3P_0)5d{-}5p^4(^3P_2)4f}$ &${\rm [2]_{5/2}{-}[2]^o_{5/2}}$ &310.440 &59.7 B &11.67 & & &\\
\par
 & &${\rm [2]_{3/2}{-}[2]^o_{3/2}}$ &311.274 &56.5 B &10.99 & & &\\
\par
9. &${\rm 5p^4(^1D_2)6s{-}5p^4(^1D_2)6p}$ &${\rm [2]_{3/2}{-}[1]^o_{1/2}}$ &504.492 &61.4 A &4.55 &1.35 &51.46 &BBDa\\
\par
 & & & & & & &61.93 &BBDb\\
\par
 & &${\rm [2]_{3/2}{-}[1]^o_{3/2}}$ &597.113 &75.1 A &3.97 &1.49 & &\\
\par
10. &${\rm 5p^4(^3P_1)5d{-}5p^4(^3P_2)4f}$ &${\rm [2]_{3/2}{-}[2]^o_{5/2}}$ &346.126 &81.3 A &12.79 & & &\\
\par
11. &${\rm 5p^4(^3P_2)6p{-}5p^4(^3P_2)6d}$ &${\rm  [1]^o_{1/2}{-}[1]_{3/2}}$ &384.987 &164.7 A &20.94 & & &\\
\par
 & &${\rm [1]^o_{3/2}{-}[1]_{3/2}}$ &437.378 &193.9 A &19.10 & & &\\
\par
12. &${\rm 5p^4(^1D_2)5d{-}5p^4(^3P_2)4f}$ &${\rm [3]_{5/2}{-}[4] ^o_{7/2}}$ &477.319 &121.8 B &10.07 & & &\\
\par
13. &${\rm 5p^4(^3P_0)6p{-}5p^4(^3P_1)6d}$ &${\rm [1]^o_{3/2}{-}[2]_{3/2}}$ &411.214 &111.9 B &12.47 & & &\\
\par
14. &${\rm 5p^4(^3P_1)6p{-}5p^4(^3P_1)7s}$ &${\rm [0]^o_{1/2}{-}[1]_{3/2}}$ &471.518 &185.3 C &15.70 & & &\\
\par
15. &${\rm 5p^4(^3P_1)6p{-}5p^4(^3P_1)6d}$ &${\rm [2]^o_{5/2}{-}[3]_{7/2}}$ &444.813 &146.2 A &13.92 & &93.34 &LAM\\
\par
16. &${\rm 5p^4(^3P_1)6p{-}5p^4(^3P_1)6d}$ &${\rm [2]^o_{3/2}{-}[2]_{3/2}}$ &440.688 &139.1 B &13.49 & &151.12 &PK\\
\par
17. &${\rm 5p^4(^1D_2)5d{-}5p^4(^1D_2)4f}$ &${\rm [1]_{3/2}{-}[2]^o_{3/2}}$ &310.151 &67.8 B &13.28 & & &\\
\par
18. &${\rm 5p^4(^3P_1)6p{-}5p^4(^3P_1)7s}$ &${\rm [1]^o_{1/2}{-}[1]_{1/2}}$ &544.545 &122.8 A &7.80 & & &\\
\par
19. &${\rm 5p^4(^1D_2)5d{-}5p^4(^3P_1)4f}$ &${\rm [2]_{5/2}{-}[4]^o_{7/2}}$ &400.235 &168.1 B &19.77 & & &\\
\par
20. &${\rm 5p^4(^1D_2)5d{-}5p^4(^3P_1)4f}$ &${\rm [2]_{5/2}{-}[3] ^o _{7/2}}$ &393.892 &150.8 B &18.31 & & &\\
\par
21. &${\rm 5p^4(^1D_2)6p{-}5p^4(^1D_2)7s}$ &${\rm [1]^o_{3/2}{-}[2]_{5/2}}$ &499.117 &186.6 C &14.11 & &172.60 &GMPR\\
  \noalign{\smallskip} \hline
    \end{tabular}
    \vspace*{4mm} 
\end{table}