\begin{tabular}{rrrr}
  \hline
  Method & 
  Compression Ratio & 
  Compression Time & 
  Decompression Time \\
  \hline
  a & 104.00 & 2.31 & 3.56 \\
  aaa & 1.07 & 0.00 & 0.00 \\
  alphabet & 1.07 & 0.00 & 0.00 \\
  random & 8.00 & 0.00 & 0.00 \\
\end{tabular}
\caption{Results for lzrw1 (sorted by file)}