PACS Mexican Precipitation Station Information
     
     1.0  General Description
     
          The Pan American Climate Studies (PACS) Mexican Precipitation
     dataset contains data from over one thousand seven hundred stations
     across Mexico for the period January 1989 thru April 1999.  The station 
     information provided defines each station in the PACS Mexican Precipitation
     dataset with station location, name, frequency of observation, etc.  For a
     complete description of the station information file format, refer to 
     section 2.1.
     
     2.0  Detailed Data Description
     
          None.
     
     2.1  Detailed Format Description
     
          The following is a complete description of the station information
     provided with the PACS Mexican precipitation data.  Table 1 details the 
     station list parameters. The beginning and ending dates for the period of 
     coverage are in Universal Time Coordinated (UTC) time.  The Identification
     Type field indicates the source of the Identification field.  The
     Occurrence field is an integer value used to indicate co-located stations.
     Occurences have not been set for this data.  However, the station list is 
     sorted such that co-located stations appear next to each other. Note that 
     when a particular parameter is unknown for a station, either a blank, a 
     question mark, or all 9's will appear in that parameter's position.  For a
     complete list of Country, State, and County values, refer to the documents
     in the references (Section 4.0). Possible platform types and frequency 
     values are listed in Tables 2 and 3, respectively.  Note that only those 
     platform types present in the PACS Mexican Precipitation data have been 
     listed. None of the PACS Mexican Precipitation data have been commissioned.
     
     Table 1
     
     Parameter                Description
     ---------                -----------
     Identification           ID in data.
     Identification Type      ID number type.
     Latitude                 Station Latitude.
     Longitude                Station Longitude.
     Occurrence               Station occurrence.
     Lat/Lon Accuracy         Number of digits accuracy in lat/lon
                              values. 
     Name                     Expanded station name. 
     Commissioned Flag        `(C)' indicates commissioned station,
                              `(N)' indicates station which is NOT
                              commissioned. None of the stations present
                              in the PACS Mexican Precipitation data have been
                              commissioned.
     Begin Period of Coverage Beginning date of period of coverage.
     End Period of Coverage   End date of period of coverage.
     Country                  Country in which station is located.
                              Always MX for Mexico.
     State                    State code. 
     County                   County code. 
     UTC offset               Hour Offset from UTC time.
     DST switch               'y' indicates station does switch to 
                              Daylight Savings Time (DST). 
                              'n' indicates station does not switch to DST.
     Platform type            Collection Platform. 
     Reporting Frequency      Frequency of data collection. 
     Elevation                Station elevation.
     Fixed/Mobile flag        Flag indicating if station has fixed 
                              location. 'f' indicates a fixed station.
                              'm' indicates a mobile station. 
     
     Table 2
     
     
     Platform Type  Description
     -------------  -----------
     197            Mexican Precipitation Data
     
     Table 3
     
     Reporting Frequency
     -------------------
     < 1 second
     1 second
     < 1 minute
     1 minute
     5 minute
     6 minute
     10 minute
     15 minute
     20 minute
     30 minute
     90 minute
     hourly
     2 hourly
     3 hourly
     6 hourly
     12 hourly
     criteria
     daily
     other
     no set schedule
     
     2.2  Data Remarks
     
          None.
     
     3.0  Quality Control Processing
     
          Not applicable.
     
     4.0  References
          
     Department of Commerce - National Institute of Standards and Technology
          (NIST), 1985: Federal Information Processing Standards Publication
          10-3 Countries, Dependencies, & Areas of Special Sovereignty.
          Department of Commerce - NIST, Washington, DC.
 
     National Institute of Standards and Technology (NIST), 1985: Federal
          Information Processing Standards Publication 5-1. NIST,
          Washington, DC.
 
     National Institute of Standards and Technology (NIST), 1985: Federal
          Information Processing Standards Publication 6.-3. NIST,
          Washington, DC.
 
     World Meteorological Organization (WMO), 1988: Manual on Codes
          Volume I, Part B - Binary Codes. WMO, Geneva, Switzerland.