title: Mean Median Mode lines showing only in last graph in seaborn
body: <p>I am trying to show the <code>mean</code>, <code>median</code>, and <code>mode</code> lines in two graphs but they are only visible in the last graph:</p>
  
  <pre><code>#Cut the window in 2 parts
  f, (ax_box, ax_hist) = plt.subplots(2, sharex=True, gridspec_kw={"height_ratios": (0.2, 1)})
  #plt.figure(figsize=(10,7));
  mean=df[' rating'].mean()
  median=df[' rating'].median()
  mode=df[' rating'].mode().get_values()[0]
  plt.axvline(mean, color='r', linestyle='--')
  plt.axvline(median, color='g', linestyle='-')
  plt.axvline(mode, color='b', linestyle='-')
  plt.legend({'Mean':mean,'Median':median,'Mode':mode})
  
  sns.boxplot(df[" rating"], ax=ax_box)
  sns.distplot(df[" rating"], ax=ax_hist)
  
  ax_box.set(xlabel='')
  </code></pre>