\documentclass[11pt]{amsart}
\usepackage{geometry}                % See geometry.pdf to learn the layout options. There are lots.
\geometry{letterpaper}                   % ... or a4paper or a5paper or ... 
\usepackage{rotating}
%\geometry{landscape}                % Activate for for rotated page geometry
%\usepackage[parfill]{parskip}    % Activate to begin paragraphs with an empty line rather than an indent
\usepackage{graphicx}
\usepackage{amssymb}
\usepackage{epstopdf}
\DeclareGraphicsRule{.tif}{png}{.png}{`convert #1 `dirname #1`/`basename #1 .tif`.png}

\title{LUCENE}
\author{The Author}
%\date{}                                           % Activate to display a given date or no date

\begin{document}
\maketitle
\section{Scale Up Study}
%\subsection{}
\parbox{0.6in}{lucene2.0 (defects)}
\begin{tabular}{|r|r|rr|}
\multicolumn{4}{l}{} \\\cline{3-4}
\multicolumn{2}{c|}{~} & \multicolumn{2}{c|}{treated}\\\hline
percentile & raw & global & local\\\hline
0.00 & 0.00 & 0.00 & 0.00 \\
0.25 & 0.00 & 0.00 & 0.00 \\
0.50 & 0.00 & 4.55 & 0.00 \\
0.75 & 9.09 & 9.09 & 0.00 \\
1.00 & 100.00 & 100.00 & 27.27 \\ \hline
75th-25th & 9.09 & 9.09 & 0.00 \\ \hline
\end{tabular}
\begin{tabular}{r@{~=~}l}
min&0\\
max&100\\
num datums & 195\\
\end{tabular}

\parbox{0.6in}{lucene2.2 (defects)}
\begin{tabular}{|r|r|rr|}
\multicolumn{4}{l}{} \\\cline{3-4}
\multicolumn{2}{c|}{~} & \multicolumn{2}{c|}{treated}\\\hline
percentile & raw & global & local\\\hline
0.00 & 0.00 & 0.00 & 0.00 \\
0.25 & 0.00 & 0.00 & 0.00 \\
0.50 & 2.13 & 2.13 & 0.00 \\
0.75 & 4.26 & 4.26 & 2.13 \\
1.00 & 100.00 & 23.40 & 8.51 \\ \hline
75th-25th & 4.26 & 4.26 & 2.13 \\ \hline
\end{tabular}
\begin{tabular}{r@{~=~}l}
min&0\\
max&100\\
num datums & 247\\
\end{tabular}

\parbox{0.6in}{lucene2.4 (defects)}
\begin{tabular}{|r|r|rr|}
\multicolumn{4}{l}{} \\\cline{3-4}
\multicolumn{2}{c|}{~} & \multicolumn{2}{c|}{treated}\\\hline
percentile & raw & global & local\\\hline
0.00 & 0.00 & 0.00 & 0.00 \\
0.25 & 0.00 & 0.00 & 0.00 \\
0.50 & 3.33 & 3.33 & 0.00 \\
0.75 & 10.00 & 10.00 & 6.67 \\
1.00 & 100.00 & 30.00 & 23.33 \\ \hline
75th-25th & 10.00 & 10.00 & 6.67 \\ \hline
\end{tabular}
\begin{tabular}{r@{~=~}l}
min&0\\
max&100\\
num datums & 340\\
\end{tabular}

\parbox{0.6in}{lucene2.0\\lucene2.2 (defects)}
\begin{tabular}{|r|r|rr|}
\multicolumn{4}{l}{} \\\cline{3-4}
\multicolumn{2}{c|}{~} & \multicolumn{2}{c|}{treated}\\\hline
percentile & raw & global & local\\\hline
0.00 & 0.00 & 0.00 & 0.00 \\
0.25 & 0.00 & 0.00 & 0.00 \\
0.50 & 2.13 & 2.13 & 0.00 \\
0.75 & 4.26 & 4.26 & 0.00 \\
1.00 & 100.00 & 29.79 & 8.51 \\ \hline
75th-25th & 4.26 & 4.26 & 0.00 \\ \hline
\end{tabular}
\begin{tabular}{r@{~=~}l}
min&0\\
max&100\\
num datums & 442\\
\end{tabular}

\parbox{0.6in}{lucene2.0\\lucene2.4 (defects)}
\begin{tabular}{|r|r|rr|}
\multicolumn{4}{l}{} \\\cline{3-4}
\multicolumn{2}{c|}{~} & \multicolumn{2}{c|}{treated}\\\hline
percentile & raw & global & local\\\hline
0.00 & 0.00 & 0.00 & 0.00 \\
0.25 & 0.00 & 0.00 & 0.00 \\
0.50 & 3.33 & 3.33 & 0.00 \\
0.75 & 6.67 & 6.67 & 6.67 \\
1.00 & 100.00 & 46.67 & 30.00 \\ \hline
75th-25th & 6.67 & 6.67 & 6.67 \\ \hline
\end{tabular}
\begin{tabular}{r@{~=~}l}
min&0\\
max&100\\
num datums & 535\\
\end{tabular}

\parbox{0.6in}{lucene2.2\\lucene2.4 (defects)}
\begin{tabular}{|r|r|rr|}
\multicolumn{4}{l}{} \\\cline{3-4}
\multicolumn{2}{c|}{~} & \multicolumn{2}{c|}{treated}\\\hline
percentile & raw & global & local\\\hline
0.00 & 0.00 & 0.00 & 0.00 \\
0.25 & 0.00 & 0.00 & 0.00 \\
0.50 & 2.13 & 2.13 & 2.13 \\
0.75 & 4.26 & 5.85 & 2.13 \\
1.00 & 100.00 & 23.40 & 8.51 \\ \hline
75th-25th & 4.26 & 5.85 & 2.13 \\ \hline
\end{tabular}
\begin{tabular}{r@{~=~}l}
min&0\\
max&100\\
num datums & 587\\
\end{tabular}

\parbox{0.6in}{lucene2.0\\lucene2.2\\lucene2.4 (defects)}
\begin{tabular}{|r|r|rr|}
\multicolumn{4}{l}{} \\\cline{3-4}
\multicolumn{2}{c|}{~} & \multicolumn{2}{c|}{treated}\\\hline
percentile & raw & global & local\\\hline
0.00 & 0.00 & 0.00 & 0.00 \\
0.25 & 0.00 & 0.00 & 0.00 \\
0.50 & 2.13 & 2.13 & 0.00 \\
0.75 & 4.26 & 4.26 & 2.13 \\
1.00 & 100.00 & 29.79 & 14.89 \\ \hline
75th-25th & 4.26 & 4.26 & 2.13 \\ \hline
\end{tabular}
\begin{tabular}{r@{~=~}l}
min&0\\
max&100\\
num datums & 782\\
\end{tabular}

\end{document}  
