booktab_table.tex

            \begin{table}[ht]
                \footnotesize
                \centering
                \begin{tabular}{llllll}
                            & \multicolumn{5}{c}{$\phi_{\Delta t} \pm 0.01 s$}\\
                            \cmidrule(lr){2-6}
                            & $T_1$ & $T_2$ & $T_3$ & $T_4$ & $T_5$\\ \toprule
                    $m_2$   & 0.52  & 0.80  & 0.08  & 0.84  & 0.80\\
                    $m_3$   & 0.96  & 1.20  & 1.32  & 0.40  & 0.72\\
                    $m_4$   & 0.64  & 0.68  & 0.84  & 0.84  & 0.68\\
                    $m_5$   & 0.92  & 1.04  & 0.72  & 1.56  & 0.44\\ \bottomrule
                \end{tabular}
                \caption{%
                    Time shifts required to resolve the phase difference. (in seconds $/s$)}
                \label{tab:phaseshifts}
            \end{table}