\begin{tabular}{rrrr}
  \hline
  Method & 
  Compression Ratio & 
  Compression Time & 
  Decompression Time \\
  \hline
  a & 88.00 & 3.56 & 4.00 \\
  aaa & 0.04 & 0.00 & 0.00 \\
  alphabet & 0.88 & 0.00 & 0.00 \\
  random & 8.50 & 0.00 & 0.00 \\
\end{tabular}
\caption{Results for yabba512 (sorted by file)}