 
File contains N, E, Z from individual ground magnetometer stations.  
The coordinate system is defined as: N is positive in the direction of local
magnetic north; E is positive in the local magnetic east direction; and Z is positive
vertical down.
 
In case data are used in publications or presentations the following text
must be used for acknowledgements:
 
For the ground magnetometer data we gratefully acknowledge:
  The S-RAMP Database, PI Prof. K. Yumoto and Dr. K. Shiokawa; The SPIDR database;
  Intermagnet; The institutes who maintain the IMAGE magnetometer array; AARI data,
  PI Prof. Oleg Troshichev; Danish Meteorological Institute, Mr. Ole Rasmussen and
  Project Scientist Dr. Jurgen Watermann; CARISMA, PI Dr. Ian Mann; The MACCS
  program, PIs Dr. W. J. Hughes and Dr. M. Engebretson as well as the Geomagnetism
  Unit of the Geological Survey of Canada; GIMA, PI Prof. John Olson; MEASURE, UCLA
  IGPP and Florida Institute of Technology; USGS, Dr. Jeffrey J. Love; MAGIC, PI.
  Dr. C. Robert Clauer; SAMBA, PI Dr. Eftyhia Zesta; 210 Chain, PI K. Yumoto; SAMNET,
  PI Prof. Farideh Honary; IMAGE, PI Dr. Ari Viljanen; the SuperMAG initiative, PI
  Dr. Jesper W. Gjerloev.
 
 
********************************************************
*              THESE ARE NOT FINAL DATA                *
* DESPITE EXTENSIVE CLEANING NUMEROUS BUGS STILL EXIST *
*        CHECK DATA QUALITY BEFORE PUBLICATION         *
********************************************************
 
 
Data formatting information:

The file is broken into records, one record per minute. The record
consists of a header and a body. The format for the header is:

<yr> <mo> <dy> <hr> <mt> <sc> <stnum>

Where yr,mo,dy,hr,mt and sc give the UTC timestamp for this record. The
final number stnum, gives the number of stations in the record body

The record body consists of one line per station:

<stid> <N> <E> <Z>

Where stid is the stations IAGA code and N,E,Z represent the component of 
the magnetic field.
        
Data gap identifier is 999999.
  
Comments, questions or suggestions should be directed to:
Dr. Jesper W. Gjerloev
    Johns Hopkins University
    Applied Physics Laboratory
    E-mail:Jesper.Gjerloev@ift.uib.no
 
Selected parameters:

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