\begin{figure}[H]
  \begin{center}
    \begin{tabular}{r | c c l }
      hydration & $2918.55$ & $\pm 38.05$ & ms \\
      mount & $3551.64$ & $\pm 45.83$ & ms \\
      ready & $19022.34$ & $\pm 3545.82$ & ms
    \end{tabular}
  \end{center}
  \caption{Performances initiales}
  \label{perf1}
\end{figure}