title: Gnuplot reducing the frequency of y axis range
body: <p>Hello I have a question regarding how to reduce the frequency of y axis range. I have the following plot
  <a href="https://i.stack.imgur.com/2kpwF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2kpwF.png" alt="enter image description here"></a></p>
  
  <p>Earlier I have my y range from [0-90] and I somehow reduced it with the help of some nice people comments in this froum. Now I have an issue with too many values in the y range which looks a bit clumsy. So, Is there any possible way to reduce the frequency of the y range?</p>