title: Set line to 0 if no measurements between dates in highchart
body: <p>I have some values for showing in my chart:</p>
  
  <p><a href="https://i.stack.imgur.com/UDJm3.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UDJm3.jpg" alt="enter image description here"></a></p>
  
  <p>But between 10th and 16th of september there is no measurement. I want that that period goes to 0.</p>
  
  <p>Is it possible?</p>