Error while making composite of wind anomaly..

Hellooo,

      I have ncep/ncar uwnd of dimension(time=24,lat=73,lon=
144)..I have to find the time average and remove that from my original data
and find the anomaly..The maximaum and minimum value of my anomaly data are
25.43 and -36.15 respectively. After that I have to make composite of
anomaly..But when I make composite of anomaly(anom_compo in my script) I am
getting values of the order of 10^-7 or 10^-8...I am attaching my script
here....Where I am wrong?...

Any help would be appreciated...
Thanking You

load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
begin
;**************************************************************
in1=addfile("uv850","r")
uwnd=in1->uwnd

;*****************************************************
uwndanom=new((/24,73,144/),float)
meanu=new((/1,73,144/),float)

meanu(0,:,:)=dim_avg_n_Wrap(uwnd,0)

do t=0,23
uwndanom(t,:,:)=uwnd(t,:,:)-meanu(0,:,:)
end do

copy_VarMeta(uwnd,uwndanom)
anom_compo=dim_avg_n_Wrap(uwndanom,0)
print(anom_compo)
end

-- 
**********************************
Sabeerali C T
Climate and Global Modeling Division
Indian Institute of Tropical Meteorology
Pashan, Pune, 411 008
****************************************

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Received on Mon Dec 21 06:00:56 2009