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Main Page   >   Data   >   Geomagnetic Variations  >   Minute values

Format Description for 1-minute Values
of the Geomagnetic Field Elements - WDC-format

Columns  Format        Description
  1-6       I6    Geographic Co-Latitude in 0.001 degree.
                  The distance from 0° up to 180° from the North geographic pole.
                  A decimal point is implied betweem positions 3 and 4.
  7-12      I6    East Geographic Longitude in 0.001 degree.
                  The distance from 0° up to 360° from Greenwich.
                  A decimal point is implied betweem positions 9 and 10.
 13-14      I2    Year. Last 2 digits, 82 = 1982. See also column 26.
 15-16      I2    Month (01-12).
 17-18      I2    Day of month (01-31).
    19      A1    Element (D,I,H,X,Y,Z,E or F).
 20-21      I2    Hour of day (00-23). 
 22-24      A3    Observatory's IAGA 3-letter code.
    25      I1    Arbitrary.
    26      I1    Century digit:
                   Year = 2014, Century digit = 0,
                   Year = 1978, Century digit = 9,
                   Year = 1887, Century digit = 8
                  or blank.
    27      A1    Preliminary or Definitive data.
                  Preliminary = P, Definitive = D.
 28-34     9A1    Blanks.
35-394    60I6    60 6-digit 1-minute values for the given element for that
                  data hour. 
                  The values are in nanoTeslas for the intensity elements H,X,Y,Z,E and F,
                  and in tenth-minutes for D and I (612 = l degree + 1.2 minutes East). 
395-400     I6    Hourly mean value - the average of the proceeding 60 one-minute values.
401-402           Record end marker.
                  Two chars 'cr'= 13 and 'nl'= 10.

Each element value and the hourly mean is given in a 6-digit field including
a minus sign for negative values.

Missing data value spaces are padded with 999999.

The records are sorted according to observatory code, year, month, day, element.

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