NOAA MARINE SURVEY DATA FORMAT (NOAAM)

COLUMNS         FMT             DESCRIPTION
HEADER FILE:
 16 RECORDS, 120 CHARACTERS PER RECORD - CONTAINS DESCRIPTION OF DATA
DATA FILE:
  1-  9         9X              BLANK
 10- 10         A1              + OR - SIGN FOR TZONE
 11- 14         F4.2            TIME ZONE CORRECTION EQUALS ZERO WHEN TIME IS GMT
 15- 16         I2              YEAR FROM 1990
 17- 18         I2              MONTH
 19- 20         I2              DAY OF MONTH
 21- 22         I2              HOUR OF DAY
 23- 27         F5.3            MINUTE- PRECISION TO 0.001 MINUTE
 28- 28         A1              + OR - SIGN FOR LATITUDE
 29- 35         F7.5            GEODETIC LATITUDE
 36- 36         A1              + OR - SIGN FOR LONGITUDE
 37- 44         F8.5            LONGITUDE
 45- 66         16X,F6.1        SCALAR MAGNETIC FIELD, 1ST SENSOR, TO 0.1 nT
                                       IF UNSPECIFIED, SET TO 999999
 67- 72         F6.1            SCALAR MAGNETIC FIELD, 1ST SENSOR - IF ONLY
                                      ONE SENSOR IS DEPLOYED OR IF FIELD IS
                                       UNSPECIFIED, SET EQUAL TO 999999
 73- 73         A1              + OR - SIGN FOR RESIDUAL MAGNETIC FIELD
 74- 78         F5.1            RESIDUAL MAGNETIC FIELD
                                     SET TO 99999 IF UNSPECIFIED
 79- 79         I1              SENSOR USED FOR RESIDUAL FIELD
 80- 80         A1              + OR - SIGN FOR DIURNAL CORRECTION
 81- 84         F4.1            MAGNETIC DIURNAL CORRECTION
                                    = 9999, THEN TOTAL AND RESIDUAL FIELDS ARE
                                       UNCORRECTED
                                     neq 9999, THEN TOTAL AND RESIDUALS
                                     ARE ASSUMED TO HAVE BEEN ALREADY CORRECTED
 85- 85         A1              + OR 1 SIGN FOR ALTITUDE OF SENSOR
                                      IF +, BELOW SEA LEVEL,
                                      IF --, ABOVE SEA LEVEL
 86- 90         F5.0            ALTITUDE OF LEAD MAGNETIC SENSOR ABOVE OR
                                     BELOW SEA LEVEL (Meters)