\begin{figure}[H]
  \begin{center}
    \begin{tabular}{r | c c l | r r l}
      hydration & $1338.76$ & $\pm 291.44$ & ms & diminution & $2437.44$ $\rightarrow 1338.76$ \\
      mount & $1717.74$ & $\pm 348.80$ & ms & diminution & $3033.36$ $\rightarrow 1717.74$ \\
      ready & $4785.31$ & $\pm 743.51$ & ms & diminution & $6517.79$ $\rightarrow 4785.31$
    \end{tabular}
  \end{center}
  \caption{Performances après avoir optimisé \texttt{fromPlain}}
  \label{perf4}
\end{figure}