ASOS/AWOS
                         DATA BASE RECORD LAYOUT
                               (AWOS-FILE)



INFORMATION EFFECTIVE DATE: 04/05/2012 CHARTING CYCLE

    RECORD FORMAT: FIXED
    LOGICAL RECORD LENGTH: 255

FILE STRUCTURE DESCRIPTION:
---------------------------

    THER ARE A VARIABLE NUMBER OF FIXED-LENGTH RECORDS FOR
    EACH ASOS/AWOS.  THE NUMBER OF RECORDS IS DETERMINED BY
    THE NUMBER OF REMARK FIELDS RELATED TO EACH ASOS/AWOS.
    THE RECORDS ARE IDENTIFIABLE BY A RECORD TYPE
    INDICATOR (AWOS1, AWOS2), WX SENSOR INDENT AND
    WX SENSOR TYPE.

    EACH RECORD ENDS WITH A CARRIAGE RETURN CHARACTER AND LINE FEED
    CHARACTER (CR/LF). THIS LINE TERMINATOR IS NOT INCLUDED IN THE
    LOGICAL RECORD LENGTH.


DESCRIPTION OF THE RECORD TYPES:
--------------------------------

    AN 'AWOS1' RECORD TYPE CONTAINS THE MAIN ASOS/AWOS DATA FOR
    THE RESPECTIVE WX SENSOR INDENT AND SENSOR TYPE. THERE IS ALWAYS AN
    AWOS1 RECORD.

    AN 'AWOS2' RECORD TYPE CONTAINS ONE 200 CHARACTER
    REMARK PERTAINING TO THE PRECEDING AWOS1 RECORD. THERE CAN BE
    ZERO, ONE, OR MANY AWOS2 RECORDS FOR EACH AWOS1 RECORD.

    EACH AWOS2 RECORD CONTAINS THE BASIC ASOS/AWOS IDENTIFYING
    INFORMATION (WX SENSOR INDENT AND WX SENSOR TYPE).


    GENERAL INFORMATION:
    1.  LEFT JUSTIFIED FIELDS HAVE TRAILING BLANKS
    2.  RIGHT JUSTIFIED FIELDS HAVE LEADING BLANKS
    3.  ELEMENT NUMBER IS FOR INTERNAL REFERENCE ONLY
           AND NOT IN RECORD
    4.  THE UNIQUE AWOS IDENTIFIER IS MADE UP OF
           WX SENSOR INDENT AND WX SENSOR TYPE


*********************************************************************

            'AWOS1' RECORD TYPE - BASE DATA

*********************************************************************


J  T   L    S L    E N
U  Y   E    T O    L U
S  P   N    A C    E M
T  E   G    R A    M B
       T    T T    E E
       H      I    N R
              O    T
              N            FIELD DESCRIPTION
L  AN  0005 00001  N/A     RECORD TYPE INDICATOR.
                             AWOS1:  ASOS/AWOS FOR RESPECTIVE
                             WX SENSOR INDENT AND WX SENSOR TYPE
L  AN  0004 00006  N/A     WX SENSOR IDENT
L  AN  0010 00010  N/A     WX SENSOR TYPE
                             ASOS
                             AWOS-1
                             AWOS-2
                             AWOS-3
                             AWOS-4
                             AWOS-A
                             ASOS-A
                             ASOS-B
                             ASOS-C
                             ASOS-D
                             AWSS
                             AWOS-3T
                             AWOS-3P
                             AWOS-3PT
                             AWOS-AV
                             WEF
                             SAWS
L  AN  0001 00020  N/A     COMMISSIONING STATUS
                             Y - YES
                             N - NO
L  AN  0010 00021  N/A     COMMISSIONING/DECOMMISSIONING DATE (MM/DD/YYYY)
L  AN  0001 00031  N/A     NAVAID FLAG - WX SENSOR ASSOCIATED WITH NAVAID
                             Y - YES
                             N - NO
L  AN  0014 00032  N/A     STATION LATITUDE
                             DD-MM-SS.SSSSH
L  AN  0015 00046  N/A     STATION LONGITUDE
                             DDD-MM-SS.SSSSH
L  AN  0007 00061  N/A     ELEVATION
                             (EX. 12345.6)
L  AN  0001 00068  N/A     SURVEY METHOD CODE
                             E - ESTIMATED
                             S - SURVEYED
L  AN  0007 00069  N/A     STATION FREQUENCY
L  AN  0007 00076  N/A     SECOND STATION FREQUENCY
L  AN  0014 00083  N/A     STATION TELEPHONE NUMBER
L  AN  0014 00097  N/A     SECOND STATION TELEPHONE NUMBER
L  AN  0011 00111  A0      LANDING FACILITY SITE NUMBER WHEN STATION LOCATED
                             AT AIRPORT (EX. 04508.*A)
L  AN  0040 00122  N/A     STATION CITY
L  AN  0002 00162  N/A     STATION STATE POST OFFICE CODE (EX. IL)
L  AN  0010 00164  N/A     INFORMATION EFFECTIVE DATE (MM/DD/YYYY)
                             THIS DATE COINCIDES WITH THE 56-DAY CHARTING AND
                             PUBLICATION CYCLE DATE
       0082 00174  N/A     BLANKS: FILLER

*********************************************************************

            'AWOS2' RECORD TYPE - ASOS/AWOS REMARKS

*********************************************************************

J  T  L    S L    E N
U  Y  E    T O    L U
S  P  N    A C    E M
T  E  G    R A    M B
      T    T T    E E
      H      I    N R
             O    T
             N             FIELD DESCRIPTION
L AN  0005 00001  N/A      RECORD TYPE INDICATOR.
                             AWOS2:  ASOS/AWOS REMARKS FOR RESPECTIVE
                             WX SENSOR INDENT AND SENSOR TYPE
L AN  0004 00006  N/A      WX SENSOR IDENT
L AN  0010 00010  N/A      WX SENSOR TYPE
L AN  0236 00020  RMRKS    ASOS/AWOS REMARKS, FREE-FORM TEXT.
                           FOR REMARKS REFERENCE A SPECIFIC ELEMENT, THE REMARK
                           WILL BE PRECEDED BY THE DATA ELEMENT NAME.