title: add multiple colorbars to a subplot of polar contourf
body: <p>My question is almost like this <a href="https://stackoverflow.com/questions/22416965/adding-a-colorbar-to-a-polar-contourf-multiplot">question</a>. The difference is that i am wondering how to add the colorbar to each polar plot on a multiple contourf plot and not one for all the plots. 
  I tried it this way : </p>
  
  <pre><code>import numpy as np
  import matplotlib.pyplot as plt
  import matplotlib as mpl
  
  dt = 20.0
  dist_vec = np.arange(0,901,dt)
  azim_vec = np.arange(0,361,dt)
  values1 = np.random.random((dist_vec.size,azim_vec.size))
  values2 = np.random.random((dist_vec.size,azim_vec.size))
  values3 = np.random.random((dist_vec.size,azim_vec.size))
  
  fig, axs = plt.subplots(1, 3, figsize=(12,5),subplot_kw=dict(projection='polar'))
  p1 = axs[0].contourf(np.deg2rad(azim_vec),dist_vec, values1, cmap='viridis')
  fig.colorbar(p1)
  p2 = axs[1].contourf(np.deg2rad(azim_vec),dist_vec, values2, cmap='viridis')
  fig.colorbar(p2)
  p3 = axs[2].contourf(np.deg2rad(azim_vec),dist_vec, values3, cmap='viridis')
  fig.colorbar(p3)
  fig.subplots_adjust(left=0.05,right=0.85)
  plt.show()
  </code></pre>
  
  <p>The result is this : 
   <a href="https://i.stack.imgur.com/hHbIb.png" rel="nofollow noreferrer">enter image description here</a></p>
  
  <p>What i want it's to add the colorbar of each plot next to it, and of course that all the colorbars and figures are normalized in size.</p>