\begin{figure}[!h]
\scriptsize
\begin{center}
\begin{tabular}{|c|r|r|c|}
\multicolumn{4}{l}{~}\\
\multicolumn{4}{l}{~}\\\cline{2-3}
\multicolumn{1}{c|}{~}         &\multicolumn{2}{c|}{frequency} & \multicolumn{1}{c}{~}\\\cline{2-3}
\multicolumn{1}{c|}{range}	&	 $b$	&	 $r$	&	\multicolumn{1}{c}{$b^2/(b+r)$} \\
\multicolumn{1}{c|}{~}	&	best	&	 rest	&	\multicolumn{1}{c}{~} \\\hline
\rowcolor[gray]{.9}FP=lo	&	5/5	&	4/15	&	79\%\\
hw=lo	&	4/5	&	13/15	&	38\%\\
co=lo	&	2/5	&	5/15	&	22\%\\
at=md	&	1/5	&	2/15	&	12\%\\
at=hi	&	1/5	&	2/15	&	12\%\\
prod=md	&	1/5	&	4/15	&	9\%\\
co=md	&	0/5	&	5/15	&	0\%\\
prod=hi	&	0/5	&	3/15	&	0\%\\
FP=md	&	0/5	&	7/15	&	0\%\\
hw=md	&	0/5	&	1/15	&	0\%\\
\hline
\end{tabular}
\end{center}
\caption{Controllable features ranked.}\label{fig:train-bestrest}
\end{figure}
