\begin{figure}
  \centering\hspace{\fill}
  \subcaptionbox{Microdata\label{tab:snapshot-micro}}{%
    \begin{tabular}{@{}lrll@{}}
      \toprule
      \emph{Name} & \multicolumn{1}{c}{Age} & Location & Status \\
      \midrule
      Donald    & $27$ & Le Marais      & at work \\
      Daisy     & $25$ & Belleville     & driving \\
      Huey      & $12$ & Montmartre     & running \\
      Dewey     & $11$ & Montmartre     & at home \\
      Louie     & $10$ & Quartier Latin & walking \\
      Quackmore & $62$ & Opéra          & dining \\
      \bottomrule
    \end{tabular}%
  }\hspace{\fill}
  \subcaptionbox{Statistical data\label{tab:snapshot-statistical}}{%
    \begin{tabular}{@{}lr@{}}
      \toprule
      Location & \multicolumn{1}{c@{}}{Count} \\
      \midrule
      Belleville     & $1$ \\
      Quartier Latin & $1$ \\
      Le Marais      & $1$ \\
      Montmartre     & $2$ \\
      Opéra          & $1$ \\
      \bottomrule
      \\
    \end{tabular}%
  }\hspace{\fill}
  \caption{Example of raw user-generated (a)~microdata, and the related (b)~statistical data for a specific timestamp.} 
  \label{fig:snapshot}
\end{figure}