\begin{tabular}{rrrr}
  \hline
  Method & 
  Compression Ratio & 
  Compression Time & 
  Decompression Time \\
  \hline
  bib & 1.89 & 6.45 & 8.04 \\
  book1 & 2.34 & 7.91 & 8.90 \\
  book2 & 1.98 & 7.03 & 7.88 \\
  geo & 4.96 & 54.73 & 60.56 \\
  news & 2.42 & 10.36 & 11.87 \\
  obj1 & 3.70 & 24.51 & 27.76 \\
  obj2 & 2.35 & 15.85 & 17.85 \\
  paper1 & 2.36 & 7.94 & 9.39 \\
  paper2 & 2.34 & 7.86 & 8.79 \\
  pic & 0.95 & 4.85 & 5.59 \\
  progc & 2.40 & 8.41 & 9.67 \\
  progl & 1.69 & 5.46 & 6.59 \\
  progp & 1.72 & 6.00 & 6.97 \\
  trans & 1.50 & 5.50 & 6.67 \\
\end{tabular}
\caption{Results for ppmD5 (sorted by file)}
