
\begin{tabular}{lccccc}
\toprule
Event & \multicolumn{2}{c}{Redshifted} & \hphantom{X} & \multicolumn{2}{c}{Redshifted} \\
& \multicolumn{2}{c}{frequency [Hz]} & \hphantom{X} & \multicolumn{2}{c}{damping time [ms]} \\[0.075cm]
\cline{2-3}
\cline{4-6}
& IMR & DS & \hphantom{X} & IMR & DS \\
\midrule

GW191109\_010717 &
$120^{+8}_{-6}$ &
$104^{+10}_{-6}$  &
\hphantom{X} &
$7.8^{+2.5}_{-1.0}$ &
$14.6^{+6.1}_{-4.0}$\\[0.075cm]

GW191222\_033537 &
$147^{+13}_{-14}$ &
$157^{+772}_{-63}$  &
\hphantom{X} &
$6.9^{+1.1}_{-0.8}$ &
$15.3^{+30.4}_{-12.1}$\\[0.075cm]

GW200129\_065458 &
$251^{+9}_{-11}$ &
$217^{+27}_{-51}$  &
\hphantom{X} &
$4.5^{+0.5}_{-0.4}$ &
$2.8^{+2.4}_{-1.2}$\\[0.075cm]

GW200224\_222234 &
$197^{+9}_{-8}$ &
$195^{+11}_{-13}$  &
\hphantom{X} &
$5.6^{+0.6}_{-0.5}$ &
$7.3^{+6.3}_{-3.3}$\\[0.075cm]

GW200311\_115853 &
$236^{+10}_{-13}$ &
$320^{+630}_{-246}$  &
\hphantom{X} &
$4.4^{+0.5}_{-0.4}$ &
$21.7^{+25.3}_{-19.6}$\\[0.075cm]

\bottomrule
\end{tabular}