SFL604 lists data from a GEMPAK surface file in a fixed format. INPUT PARAMETERS SFFILE *Surface data file AREA *Data area DATTIM *Date/time OUTPUT *Output device/filename SKPMIS *Skip missing data flag IDNTYP *STNM or STID SFPARM *Surface parameter list PROGRAM DESCRIPTION SFL604 lists data from a surface file in a format designed to display airways data. Data will be listed for the stations and times requested in AREA and DATTIM. If SKPMIS is YES, stations that are within the area requested, but have not reported data, will not be listed. If SKPMIS is set to NO, then only the date and station identifier will be listed for nonreporting stations. Stations may be identified in the output listing by character or numeric identifier. This is accomplished by setting IDNTYP to STID or STNM. This program will list predefined parameters only. However, stations may be selected using conditions in SFPARM. For example, if SFPARM = WTHR=S+, then only those stations reporting heavy snow will be listed. The conditions specified in SFPARM can be for any computable parameter, not just those to be listed. EXAMPLES 1. List the data to a file for all the stations in Maryland at the most recent time. SFFILE = data:newsfc.dat AREA = @md DATTIM = last OUTPUT = f SKPMIS = yes IDNTYP = stid SFPARM = 2. List the data at 12Z and 13Z at BWI and DCA. The following parameters must be changed from example 1: DATTIM = /12-/13 AREA = @bwi;dca 3. List all stations in Delaware, including nonreporting stations. Identify the stations with a station number. The following parameters must be changed from example 1: AREA = @de SKPMIS = no IDNTYP = stnm 4. List all stations reporting temperatures greater than or equal to 75 degrees. The following parameters must be changed from example 1: SFPARM = tmpf>75 ERROR MESSAGES [SFL604 +1] Parameter ... cannot be computed. [SFL604 -1] Fatal error initializing TAE. [SFL604 -2] Fatal error reading TAE parameters. [SFL604 -3] No valid stations could be found. [SFL604 -4] No parameters can be computed.