\begin{figure}
\renewcommand{\baselinestretch}{0.95}
\begin{center}
\scriptsize
\begin{tabular}{lr}
\begin{tabular}{c|lrr|lr}
       &\multicolumn{3}{c|}{ranges}      &\multicolumn{2}{c}{values}\\\hline
project&feature&low&high&feature&setting\\\hline
&prec&1&2&data&3\\
OSP:&flex&2&5&pvol&2\\
Orbital&resl&1&3&rely&5\\
space&team&2&3&pcap&3\\
plane&pmat&1&4&plex&3\\
&stor&3&5&site&3\\
&ruse&2&4&&\\
&docu&2&4&&\\
&acap&2&3&&\\
&pcon&2&3&&\\
&apex&2&3&&\\
&ltex&2&4&&\\
&tool&2&3&&\\
&sced&1&3&&\\
&cplx&5&6\\
&KSLOC&75&125\\\hline
&rely&3&5&tool&2\\
JPL &data&2&3&sced&3\\
flight&cplx&3&6&&\\
software&time&3&4&&\\
&stor&3&4&&\\
&acap&3&5&&\\
&apex&2&5&&\\
&pcap&3&5&&\\
&plex&1&4&&\\
&ltex&1&4&&\\
&pmat&2&3&&\\
&KSLOC&7&418&&\\
\end{tabular}&\\
\begin{tabular}{c|lrr|lr}
       &\multicolumn{3}{c|}{ranges}      &\multicolumn{2}{c}{values}\\\hline
project&feature&low&high&feature&setting\\\hline
&prec&3&5&flex&3\\
OSP2 &pmat&4&5&resl&4\\
&docu&3&4&team&3\\
&ltex&2&5&time&3\\
&sced&2&4&stor&3\\
&KSLOC&75&125&data&4\\
&&&&pvol&3\\
&&&&ruse&4\\
&&&&rely&5\\
&&&&acap&4\\
&&&&pcap&3\\
&&&&pcon&3\\
&&&&apex&4\\
&&&&plex&4\\
&&&&tool&5\\
&&&&cplx&4\\
&&&&site&6\\\hline
&rely&1&4&tool&2\\
JPL &data&2&3&sced&3\\
ground&cplx&1&4&&\\
software&time&3&4&&\\
&stor&3&4&&\\
&acap&3&5&&\\
&apex&2&5&&\\
&pcap&3&5&&\\
&plex&1&4&&\\
&ltex&1&4&&\\
&pmat&2&3&&\\
&KSLOC&11&392&&\\
\end{tabular}
\end{tabular}
\end{center}
\caption[The four NASA case studies]{The four NASA case studies. Numeric values 
\textit{\{1, 2, 3, 4, 5, 6\}} map to \textit{\{very low, low, nominal,
high, very high, extra high\}}.}\label{fig:cases}
\end{figure}