title: How to add a custom axis line to a google chart?
body: <p>I have a google scatter chart that has some significant thresholds in it. How do I visualise them? </p>
  
  <p>Do I push some extra ticks on chart axis? If so how do I add just one and how do I style it?</p>
  
  <p>I am aiming for something like this.</p>
  
  <p><img src="https://chart.googleapis.com/chart?cht=lc&amp;chd=s:cEAELFJHHHKUju9uuXUc&amp;chco=76A4FB&amp;chls=2.0&amp;chs=220x125&amp;chxt=x,y,r,x&amp;chxr=1,0,4&amp;chxl=2:|min|average|max|3:|Jan|Feb|Mar&amp;chxs=2,0000dd,13,-1,t,FF0000&amp;chxp=2,10,35,95&amp;chxtc=1,10|2,-180" alt="Chart"></p>
  
  <p>I am using <a href="https://github.com/RakanNimer/react-google-charts" rel="nofollow noreferrer">React Google charts</a></p>