1951-80 MONTHLY SEQUENTIAL TEMPERATURE
                            AND PRECIPITATION DATA

                                  TD-9641

This data set contains the data from which the 1951-80 normals were computed.
The data are arranged sequentially by year-month for 30 years by station.
There are 3,349 temperature and 5,506 precipitation stations.


ELEMENT                                         WIDTH     COLUMNS

BLANK                                             1        001-001
ELEMENT CODE                                      1        002-002
STATION IDENTIFICATION                            6        003-008
BLANK                                             2        009-010
YEAR (LAST 3 DIGITS OF YEAR)                      3        011-013
VALUE (JAN)                                       5        014-018
INDICATOR (JAN)                                   1        019-019
      .
      .
      .
VALUE (DEC)                                       5        080-084
INDICATOR (DEC)                                   1        085-085
ANNUAL VALUE                                      5        086-090
ANNUAL INDICATOR                                  1        091-091
BLANK (TEMPERATURE FILE ONLY)                     1        092-092


ELEMENT CODES: 1 = MAXIMUM TEMPERATURE (DEGREES F IN TENTHS)
               2 = MINIMUM TEMPERATURE (DEGREES F IN TENTHS)
               3 = MEAN TEMPERATURE (DEGREES F IN TENTHS)
               4 = PRECIPITATION (INCHES AND HUNDREDTHS)

INDICATORS:   E = DATA WHOLLY OR PARTIALLY ESTIMATED
              M = IF LESS THAN 10 DAYS MISSING, AVERAGE VALUE IS ENTERED
              D = WATER EQUIVALENT OF SNOWFALL WHOLLY OR PARTIALLY ESTIMATED
              A = PRECIPITATION VALUE ADJUSTED BY RATIO METHOD

A VALUE OF 99999 IN PRECIPITATION DATA REPRESENTS A TRACE