title: Error bars in histogram
body: <p>I am trying to include confidence interval as error bars in the histogram. However, I am not getting good results. I have tried the next:</p>
  
  <pre><code>set bars front
  set style fill solid 0.5
  set style histogram errorbars gap 1 lw 1
  set style data histograms
  set grid ytics
  plot "data2.dat" using 2:3:4:xticlabels(1) title columnheader linecolor
  rgb "gray30"
  </code></pre>
  
  <p>This is my data:</p>
  
  <pre><code> X                 Y         C Interval(-)  C Interval (+)
  0.1              0.1111       0.110950699     0.111166503
  0.2              0.2498       0.249474612     0.250095218
  0.4              0.6675       0.666310581     0.668667648
  0.6              1.4962       1.491809644     1.500612543
  0.8              4.0069       3.982266522     4.031590962
  </code></pre>
  
  <p>And this is the result:
  <a href="https://i.stack.imgur.com/lGvKr.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lGvKr.jpg" alt="enter image description here"></a></p>
  
  <p>What I am doing wrong? Why the error bars are almost not visible? Is it because of my data of because I am doing something wrong?</p>