\documentclass[9pt,a4paper]{scrartcl}
\begin{document}
\pagestyle{empty}

\begin{table}
\centering
\input{fig-space.tex}
\caption{Space Requirements of CSTs.}
\end{table}

\begin{table}
\centering
\input{fig-time.tex}
\caption{Query times of CSTs, in microseconds.}
\end{table}

\end{document}

