The column numbers where the data are located are in parentheses at the end of the explanation. Note that each field is separated by a colon.
CCALL - 8-character ICAO identifier. (1-8)
CCALLS - 8-character call letters formerly used to identify the site. (10-17)
NAME(1:17) - 17 characters of a station name or location. Although 20 characters are available for this field for visual inspection, MOS-2000 software uses only 17 characters. (19-38)
NAME(19:20) - 2 characters of the state (or country) where the station is located. Note that the total station location is made up of 17 characters from the "name," a blank, and 2 characters from the "state," making a total of 20 characters. (40-41)
NBLOCK - 6 characters of which the first 5 make up the WMO block/station number, and the last is used by the U.S. Air Force and NCEP. (43-48)
NELEV - Station elevation in feet, which should be the elevation of the barometer (HP). (50-54)
SLAT - Latitude of the station in ten-thousandths of degrees. Note that this is read as two fields according to the format above, the first being either "N" or "S" representing, respectively, north or south latitude. (56-63)
SLON - Longitude of the station in ten-thousandths of degrees. Note that this is read as two fields according to the format above, TDL ON 00-1 January 1, 2000 10.2 the first being either "E" or "W" representing, respectively, east or west longitude. (65-73)
ITIMEZ - A time zone indicator, being the number of hours the station is different from UTC. Local standard time = UTC + ITIMEZ. (75-77)
ITYPE - The "type" of station, where:
        0 or blank = manual, precip reported,
        1 = semiautomated, precip reported,
        2 = manual, precip not reported,
        3 = automated, precip not reported, and
        4 = automated, precip reported.
(79)
OPEN - Indicates whether or not another station is present in the dictionary with a different location, but the same call letters; a blank indicates the call letters are current and an "O" indicates the station has closed and the call letters have been reused for another station. (81)
CCALLK1 - 8-characters containing call letters or ICAO identifiers used to link the station with past reporting stations. (83-90)
CCALLK2 - 8-characters containing call letters or ICAO identifiers used to link the station with past reporting stations. (92-99)
CCALLK3 - 8-characters containing call letters or ICAO identifiers used to link the station with past reporting stations. (101-108)
CCALLK4 - 8-characters containing call letters or ICAO identifiers used to link the station with past reporting stations. (110-117)
IDATE - 10-digit date which indicates the date that data were first received from the station identified as CCALL, when known. If errors are detected in SLAT or SLON, IDATE indicates the date the dictionary entry was corrected. Many are blank, indicating the station has been in the directory and sending data for a long time. (119-128)
IWBAN - The 5-digit WBAN number. (130-134)
IBLANK - 10 positions left vacant for possible future use. (136-145)
COMENT - As many columns as necessary can be used for comments. Usually this will be for visual inspection and not used by software. This is in distinction to the "IBLANK" field above which is of fixed size and is intended for software processing if necessary. Note that very long record lengths may present problems when printing, so comments are best kept short whenever possible. This field is currently restricted to 60 columns. (147-206)