title: Excel horizontal axis values irregular and ugly
body: <p>The image shows a chart with time vs temp and humidity data from a high-powered rocket launch (it hit about 7000 ft at the highest point, and then slowly parachuted down).  There are about 4000 data points here.  What I want to fix is the ugly horizontal axis numbers.  How do I get them to display as fixed interval numbers? I think tens would do nicely.</p>
  
  <p><img src="https://i.stack.imgur.com/xyXDh.png" alt="enter image description here"></p>