title: MultiIndexing and plotting using pandas
body: <p>I would like to plot this pandas DataFrame as three 2D lines: no_transfer, transfer and random_transfer, where each respective line is from the columns 0 to 9. The DataFrame has a MultiIndex. I'd also like to get rid of the "is_greedy" level since the value is the same for all.</p>
  
  <pre><code>                              0    1     2     3  ...      6     7     8     9
  config          is_greedy                         ...                         
  no_transfer     True        9.0  9.0  14.0  15.0  ...   16.5  15.0  11.0   9.5
  transfer        True        9.0  9.5  27.5  10.5  ...   19.5  55.5  14.0  24.0
  random_transfer True       35.5  9.0  13.5  10.0  ...   10.0  13.0  27.5  32.0
  </code></pre>