the longitude problem when read grib format data

Dear all,

 when I read CFS output with grib format, I got wrong longitude. the longitude is "lon_98: [ 0..1.875]" instead of beginning with 0 with 1.875 step. does anyone know what's happen?

Thanks in advance,
Li
-------------------------------------

The read code is:
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
   in = addfile("data/lcld.ensm.apr.cfs.data.grb","r")
   lcld = in->T_CDC_98_LCY_ave1m
   printVarSummary(lcld)
end

The output information is:
Variable: lcld
Type: float
Total Size: 14943744 bytes
            3735936 values
Number of Dimensions: 4
Dimensions and sizes: [initial_time0 | 23] x [forecast_time1 | 9] x [lat_98 | 94] x [lon_98 | 192]
Coordinates:
            initial_time0: [04/01/1981 (00:00)..04/01/2003 (00:00)]
            forecast_time1: [1..9]
            lat_98: [88.54195..-88.54195]
            lon_98: [ 0..1.875]
Number Of Attributes: 9
  sub_center : Environmental Modeling Center
  center : US National Weather Service - NCEP (WMC)
  long_name : Total cloud cover
  units : %
  _FillValue : -999
  level_indicator : 214
  gds_grid_type : 4
  parameter_table_version : 2
  parameter_number : 71

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Received on Tue Aug 05 2008 - 20:46:53 MDT