Working Group on Geomagnetic Data and Indices

Sample format: IAGA-2002 - July 2003 Revision

sample for 1-minute definitive data

 Format                 IAGA-2002                                    |
 Source of Data         Danish Meteorological Institute              |
 Station Name           Narsarsuaq                                   |
 IAGA CODE              NAQ                                          |
 Geodetic Latitude      61.160                                       |
 Geodetic Longitude     314.560                                      |
 Elevation              4                                            |
 Reported               XYZF                                         |
 Sensor Orientation     DIF                                          |
 Digital Sampling       0.01 seconds                                 |
 Data Interval Type     Filtered 1-minute (00:30 - 01:29)            |
 Data Type              Definitive                                   |
 # This area is where the data source or distributor can include     |
 # any additional information needed for proper use of data.  For    |
 # example, the observers name and contact, notes on a change of     |
 # instrumentation, reasons for missing data values, definition of   |
 # observed values, geomagnetic location of the observatory, etc.    |
 # This area should also contain the formula for computing the non-  |
 # reported elements and components of the INTERMAGNET binary        |
 # format which do not fit elsewhere.  These include:                |
 # D-conversion:                                                     |
 # = H/3438*10000.                                                   |
 # which is word 8 in the INTERMAGNET binary format and is used      |
 # to convert variations of D in minutes of arc <-> nT.  Please      |
 # note that all of the header records and comment records begin     |
 # with a space in column 1, end with a | (ASCII 124), and are       |
 # padded with spaces - never with tabs.                             |
 # H = squareroot(X*X + Y*Y), cos D = X/H, sin I = Z/F               |
DATE       TIME         DOY     NAQX      NAQY      NAQZ      NAQF   |
2001-03-13 00:00:00.000 072     10800.11  -6100.23  53381.51  54801.12
2001-03-13 00:01:00.000 072     10800.31  -6100.20  53381.51  54801.12
2001-03-13 00:02:00.000 072     10801.11  -6101.23  99999.00  54801.12
2001-03-13 00:03:00.000 072     10803.12  -6100.23  99999.00  54801.12

Sample data header and data record for hourly values

The header record for Data Interval Type might read:

 Data Interval Type     1-hour (00 - 59)

Note filler for non-reported element.

DATE       TIME         DOY     NAQX      NAQY      NAQZ      NAQF   |
2001-03-13 00:00:00.000 072     10800.11  -6100.23  53381.51  88888.00
2001-03-13 01:00:00.000 072     10800.31  -6100.20  53381.51  88888.00
2001-03-13 02:00:00.000 072     10801.11  -6101.23  53381.50  88888.00
2001-03-13 03:00:00.000 072     10803.12  -6100.23  99999.00  88888.00

Sample data header and data record for monthly values

The header record for Data Interval Type might read:

 Data Interval Type     1-month (01 - 31)

Note filler for non-reported element.

DATE       TIME         DOY      NAQX     NAQY      NAQZ      NAQF   |
2001-01-15 00:00:00.000 015     10800.11  -6100.23  53381.51  88888.00
2001-02-14 00:00:00.000 045     10800.31  -6100.20  53381.51  88888.00
2001-03-15 00:00:00.000 074     10801.11  -6101.23  53381.50  88888.00
2001-04-15 00:00:00.000 105     10803.12  -6100.23  99999.00  88888.00

Sample for 1-second Variation Data

 Format                 IAGA-2002                                    |
 Source of Data         Danish Meteorological Institute              |
 Station Name           Narsarsuaq                                   |
 IAGA CODE              NAQ                                          |
 Geodetic Latitude      61.160                                       |
 Geodetic Longitude     314.560                                      |
 Elevation              4                                            |
 Reported               HEZF                                         |
 Sensor Orientation     HEZF                                         |
 Digital Sampling       1 seconds                                    |
 Data Interval Type     1-second instantaneous                       |
 Data Type              Variation                                    |
 # This area should contain additional information needed            |
 # in order to transform the reported elements. For the data in this |
 # sample information about the declination at the observatory is    |
 # needed in order to tranform the variation data from HEZ to the    |
 # widely used XYZ orientation. Also information about the value of  |
 # horizontal field H can be useful to convert E-variations in nT to |
 # variations in minutes of arcs.                                    |
 # Approx. D  312 mins                                               |
 # Approx. H  10800 nT                                               |
DATE       TIME         DOY     NAQH      NAQE      NAQZ      NAQF   |
2001-03-13 00:00:00.000 072       800.11   -100.23    381.51  54801.12
2001-03-13 00:00:01.000 072       800.31   -100.20    381.51  54802.32
2001-03-13 00:00:02.000 072       801.11   -101.23  99999.00  54803.22
2001-03-13 00:00:03.000 072       803.12   -100.23  99999.00  54803.43

Sample data header and data record for 5 millisecond values

The header record for Data Interval Type might read:

 Data Interval Type     5 millisecond (instantaneous values).

Note filler for missing element.

DATE       TIME         DOY     NAQX      NAQY      NAQZ      NAQF   |
2001-03-13 00:00:00.000 072     10800.11  -6100.23  53381.51  99999.00
2001-03-13 00:00:00.005 072     10800.31  -6100.20  53381.51  99999.00
2001-03-13 00:00:00.010 072     10801.11  -6101.23  53381.50  54801.10
2001-03-13 00:00:00.015 072     10803.12  -6100.23  99999.00  54801.24


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