plot
   axislabels,
   dark skyblue bar,  
   light skyblue bar, 
   skyblue bar,
   very dark blue bar
  with
   page half
   comment ""
   comment left "  BARSEPARATION 10"
   title x "X Title"
   title y "Y Title"
   barseparation 10
select
  labels, col4, col3, col2, col1 from bartemp;