title: How to plot two pandas time series on same plot with legends and secondary y-axis?
body: <p>I want to plot two time series on the same plot with same x-axis and secondary y-axis. I have somehow achieved this, but two legends are overlapping and is unable to give label to x-axis and secondary y-axis.I tried putting two legend at upper-left and upper-right, but it is still not working. </p>
  
  <p>Code:</p>
  
  <pre><code>plt.figure(figsize=(12,5))
  
  # Number of request every 10 minutes
  log_10minutely_count_Series = log_df['IP'].resample('10min').count()
  log_10minutely_count_Series.name="Count"
  log_10minutely_count_Series.plot(color='blue', grid=True)
  plt.legend(loc='upper left')
  plt.xlabel('Number of request ever 10 minute')
  
  # Sum of response size over each 10 minute
  log_10minutely_sum_Series = log_df['Bytes'].resample('10min').sum()
  log_10minutely_sum_Series.name = 'Sum'
  log_10minutely_sum_Series.plot(color='red',grid=True, secondary_y=True)
  plt.legend(loc='upper right')
  plt.show()
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/BCJEz.png" rel="noreferrer"><img src="https://i.stack.imgur.com/BCJEz.png" alt="enter image description here"></a></p>
  
  <p>Thanks in advance</p>