title: Plot 4 curves in a single plot with 3 y-axes
body: <p>I have 4 sets of values: y1, y2, y3, y4 and one set x. The y values are of different ranges, and I need to plot them as separate curves with separate sets of values on the y-axis.</p>
  
  <p>To put it simple, I need 3 y-axes with different values (scales) for plotting on the same figure.</p>