SFLIST lists surface data from a GEMPAK surface data file.

INPUT PARAMETERS
 
    SFFILE    Surface data file
    AREA      Data area
    DATTIM    Date/time
    SFPARM    Surface parameter list
    OUTPUT    Output device/filename
    IDNTYP    STNM or STID
 
 

PROGRAM DESCRIPTION
 
    SFLIST lists any parameters which can be derived from the data
    in a surface data file.  The stations and times to be included
    are specified in AREA and DATTIM.  If no data are reported for
    a station, that station will not be listed.  The listings will
    be grouped by time.

    If the surface file contains both decoded and undecoded text
    data, both types can be listed by specifying GEMPAK parameters
    along with parameter 'TEXT'.  The special reports may also be
    listed in an undecoded format using the paramter 'SPCL'.  TEXT
    and SPCL may appear anywhere in the list of parameters.

    Conditions can be specified for the parameters.  The conditions
    are documented in the SFPARM documentation.

 
EXAMPLES
 
    1.	List the decoded and undecoded text air and dewpoint
        temperatures in Fahrenheit and the mean sea-level pressure
	and weather of stations in Pennsylvania for the latest time.
	Use a locally created surface file that contains both types
	of data called SAOTEXT.SFC.

	SFFILE	 =  SAOTEXT.SFC
	AREA	 =  @pa
	DATTIM	 =  last
	SFPARM	 =  tmpf;dwpf;pmsl;wthr;text
	OUTPUT	 =  t
	IDNTYP	 =  stid

    2.	List the same parameters for PIT and BWI at 0500 and
	0600 GMT.

	SFFILE	 =  SAOTEXT.SFC
	AREA	 =  @pit;bwi
	DATTIM	 =  /05-06
	SFPARM	 =  tmpf;dwpf;pmsl;wthr;text
	OUTPUT	 =  t
	IDNTYP	 =  stid

    3.	List the temperature, dewpoint, pressure, and weather
	for stations in Pennsylvania which are reporting
	thunderstorms and dewpoint temperatures greater than
	65 degrees Fahrenheit.

	SFFILE	 =  $GEMDATA/HRCBOB.SFC
	AREA	 =  @PA
	DATTIM	 =  /05-06
	SFPARM	 =  tmpf;dwpf>65;pmsl;wthr=t
	OUTPUT	 =  T
	IDNTYP	 =  STID

    4.	List the latest undecoded SAO text data for stations in
	Pennsylvania. Use a locally created surface file with SAO
	decoded and text data called SAOTEXT.SFC.

	SFFILE   =  SAOTEXT.SFC
	AREA     =  @PA
	DATTIM   =  last
	SFPARM   =  text;spcl
	OUTPUT   =  T
	IDNTYP   =  STID


ERROR MESSAGES
 
    [SFLIST  +1]    Parameter ... is not computable.
    [SFLIST  -1]    Fatal error initializing TAE.
    [SFLIST  -2]    Fatal error reading TAE parameters.
    [SFLIST  -3]    No stations reporting data.
    [SFLIST  -4]    No valid computable parameters.
