[gradsusr] plot parameters from prepbufr file

[hachelaf rabah]

Hello,
i need help to plot some parameters like presseure, temperature or
precipitations in a map or in ascii file with grads.
in attached file please find my bufr descriptor file or bellow :
========================================================
dset /home/cnpm/cwordshb/prepbufr.in
undef 9.999E+20
title prepbufr.in
dtype bufr
TDEF 1 linear 06z23may2010 1hr
STID 1,194
XVAR 6,240
YVAR 5,2
VARS 8
slon 0 06,240 LONGITUDE
slat 0 05,002 LATITUDE
STAT 0 01,194 Station id
POB 0 07,245 PRESSURE OBSERVATION
TOB 0 12,245 TEMPERATURE OBSERVATION
TP24 0 13,023 TOTAL PRECIPITATION PAST 24 HOURS
UOB 0 11,003 U-COMPONENT WIND OBSERVATION
VOB 0 11,004 V-COMPONENT WIND OBSERVATION
ENDVARS
=================================================================
when i type "d STAT" or "d slon" i can see values in gradsc interface but
when i type" d pob "or "d uob" i can'nt see any think .
knowing thant i respect values of each parameter  from the header  file.
Thank you for help .
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