case     = "wheeler"
  diro    = "./"
  latN    = 15
  latS    = -latN

  nDayWin = 96
  nDaySkip =1

   opt  = True
   opt@debug= True
   opt@pltType     = "png"
   opt@cnLinesOn   = False   ; turn off contour lines

   spd = 1
   var = "olr"

setfileoption("nc", "FileStructure", "Advanced")  ; not need for newer versions of NCL

; The 1675 index used to start the calculations  was determined seperately. 
; index 1675 corresponds to day 19790101  [ 1 Jan 1979 ]

   f   =  addfile("olr.day.mean.nc", "r")
   olr =  short2flt( f->olr(1675:,{latS:latN},:) )   ; NOAA
  ;olr =  f->olr(1675:,{latS:latN},:))               ; Adit Modi
   printVarSummary(olr)
   printMinMax(olr,0)
   print("-----")

   ymd  = cd_calendar(olr&time, -2)          ; time -> yyyymmdd
   dimo = dimsizes(olr)
   ntim = dimo(0)                           ; # days on file
   print("First and Last dates: ymd(0)="+ymd(0)+"   ymd(ntim-1)="+ymd(ntim-1))

   wkSpaceTime (olr, diro, case, var,latN, spd, nDayWin, nDaySkip, opt  )