title: excel chart different spaces between values on OX
body: <p>trying to make line chart using data</p>
  
  <pre><code>X Y
  1 12
  3 34
  5 56
  6 68
  9 79
  14 98
  </code></pre>
  
  <p>is it possible to make different spacec on the horrizontal axis?
  because now there are same between 1 and 3, 9 and 14 etc.. </p>