title: What is the height of the histograms in an pairplot in seaborn?
body: <p>I have a question regarding the y-axis of the histograms, which are generated in an default pairplot with seaborn. </p>
  
  <p>Here is some example code:</p>
  
  <pre><code>import pandas as pd
  import seaborn as sns
  import numpy as np
  
  data = [np.random.random_sample(20), np.random.random_sample(20)]
  dataFrame = pd.DataFrame(data=zip(*data))
  g = sns.pairplot(dataFrame)
  g.savefig("test.png", dpi=100)
  </code></pre>
  
  <p>What is the unit of the y-axis in the diagonal placed histograms? How can I read the height of a bin in this view?</p>
  
  <p>Thank you very much,<br>
  Chris</p>