title: I have the plot and also index values, using those How can I find out vertical Axis values at those index points?
body: <p><a href="https://i.stack.imgur.com/EeHkh.png" rel="nofollow noreferrer">enter image description here</a></p>
  <p>I Have all those peak values in Horizontal axis using those how can I find the vertical axis values at a particular point</p>