\begin{tabular}{rrrr}
  \hline
  Method & 
  Compression Ratio & 
  Compression Time & 
  Decompression Time \\
  \hline
  bib & 2.12 & 4.60 & 5.20 \\
  book1 & 2.54 & 4.10 & 4.86 \\
  book2 & 2.25 & 4.02 & 4.86 \\
  geo & 4.91 & 37.58 & 43.64 \\
  news & 2.68 & 6.66 & 7.65 \\
  obj1 & 3.72 & 18.03 & 21.18 \\
  obj2 & 2.52 & 10.95 & 11.84 \\
  paper1 & 2.48 & 4.94 & 5.76 \\
  paper2 & 2.45 & 4.43 & 5.57 \\
  pic & 0.99 & 3.69 & 4.22 \\
  progc & 2.48 & 5.95 & 6.92 \\
  progl & 1.84 & 4.25 & 4.84 \\
  progp & 1.80 & 4.66 & 5.45 \\
  trans & 1.72 & 4.12 & 4.79 \\
\end{tabular}
\caption{Results for ppmD3 (sorted by file)}
