stnmap problem

[Sim Aberson]

I am having another frustrating GrADS issue with GrADS2 on my mac.  I am trying
to make more station plots.  I have code to write out the station plot data.  I have done this before
with no problem, but get an error now.   When I run that through stnmap, I get an error:

stnmap -v -i fort.13
   Name of binary data set: fort.10
   Number of times in the data set: 1
   Number of surface variables: 0
   Number of level dependent variables: 5

Starting scan of station data binary file.
Binary data file open: fort.10

Processing time step 1
   Invalid station hdr found in station binary file
   Possible causes:  Invalid level count in hdr
                     Descriptor file mismatch
                     File not station data
                     Invalid relative time
                     Invalid sequential format
     levs = 0  flag = 27  time = 1.4013e-45

The contents of the file fort.13, in ascii, are:

  XXXXXX1   18.91675      -51.42435       0.000000               1           0
    500.0000       23.24000       91.25000      -25.13000       3.820000
  XXXXXX2   18.91410      -51.41340       0.000000               1           0
    1000.000       20.18000       91.60000      -25.86500       8.020000
  XXXXXX3   18.91055      -51.40285       0.000000               1           0
    1500.000       18.57000       79.40000      -25.35000       8.525000
  XXXXXX4   18.90680      -51.39260       0.000000               1           0
    2000.000       15.55500       82.45000      -24.31500       9.820000
  XXXXXX5   18.90230      -51.38280       0.000000               1           0
    2500.000       13.33000       82.55000      -25.01000       14.16000
  XXXXXX6   18.89670      -51.37290       0.000000               1           0
    3000.000       10.93500       80.70000      -25.08000       15.18000
  XXXXXX7   18.89175      -51.36465       0.000000               1           0
    3500.000       8.165000       68.85000      -23.95500       16.06000
  XXXXXX7   18.89175      -51.36465       0.000000               0           0


So, according to the first line, levs should be 1, flag should be zero, and time
should be zero.  But the above from stnmap has very different values.  Am I
missing something very fundamental from the documentation?  I'm stumped.

Thanks,
Sim



--
Sim Aberson         AOML/Hurricane Research Division          Miami, FL
    "Hurricane states erect statues in my honor." -- David Sedaris



DSET ^fort.10
DTYPE station
STNMAP station_data.map
OPTIONS sequential
UNDEF -999.
TITLE dropwindsondes
TDEF 1 LINEAR 11:11Z01JAN2000 1mo
VARS 5
height    1  99 height
tmphgt    1  99 temperature
rhhgt     1  99 relative humidity
ugrdhgt   1  99 u-component
vgrdhgt   1  99 v-component
ENDVARS