These geomagnetic field data are provided in IAGA-2002x format (extended IAGA2002 format) with a column for the QA/QC (Quality Assurance/Quality Control) flags added to the original IAGA2002 format, which may be more popular.
Format IAGA-2002x (Extended IAGA2002 Format) | Source of Data Kakioka Magnetic Observatory, JMA | Station Name Kakioka | IAGA CODE KAK | Geodetic Latitude 36.232 | Geodetic Longitude 140.186 | Elevation 36.0 | Reported DHZF | Sensor Orientation absolute:DIF, variation:XYZF | Digital Sampling 1 second | Data Interval Type Filtered 1-minute (00:30 - 01:29) | Data Type Definitive | # Element Geomagnetic field | # Unit D(eastward+):minute, H:nT, Z(downward+):nT, F:nT | # Issued by Kakioka Magnetic Observatory, JMA | # URL http://www.kakioka-jma.go.jp/index.html | # Last Modified Feb 14 2003 | DATE TIME DOY KAKD KAKH KAKZ KAKF | 2001-01-01 00:00:00.000 001 -420.78 30007.00 35369.60 46383.50 2001-01-01 00:01:00.000 001 -420.77 30006.80 35369.50 46383.30 2001-01-01 00:02:00.000 001 -420.77 30006.70 35369.40 46383.10 2001-01-01 00:03:00.000 001 -420.77 30006.50 35369.30 46382.90 2001-01-01 00:04:00.000 001 -420.76 30006.40 35369.10 46382.70 2001-01-01 00:05:00.000 001 -420.73 30006.20 35369.10 46382.60 2001-01-01 00:06:00.000 001 -420.72 30005.80 35368.90 46382.20 2001-01-01 00:07:00.000 001 -420.72 30005.70 35368.70 46381.90 2001-01-01 00:08:00.000 001 -420.73 30005.60 35368.30 46381.60 2001-01-01 00:09:00.000 001 -420.74 30005.40 35368.30 46381.40 2001-01-01 00:10:00.000 001 -420.73 30005.00 35368.30 46381.20
In each record, 16 digits (4 components x 4 digits) are reserved for the QA/QC flags right after the observation data. However, this field is not used yet, and is therefore left blank.