fname = "air.200001.nc" f = addfile(fname,"r") air = f->air ; read "air" off the file printVarSummary(air) printMinMax(air,0) ; ; _FillValue and missing_value attributes were different. ; I discovered that missing_value was the correct one, ; so I reset _FillValue to equal missing_value ; air@_FillValue = air@missing_value ;----Try unpacking "air", rename to "fair" and look at it. fair = short2flt(air) printVarSummary(fair) printMinMax(fair,0)