Maintained by: Kyoto University and Ministry of Education, Japan.

Summary of Data Held: Normalrun magnetograms, rapidrun magnetograms, geomagnetic hourly values, normalrun tellurigrams, rapidrun tellurigrams, Earth current hourly values, geomagnetic indices and lists of special events. Digital data on magnetic tape and CDROM, including geomagnetic hourly, 1minute and 1sec values and geomagnetic indices.

User Services: The WDC is open to visitors during normal working hours. Copies of the data are available upon request at the cost of copying. Facilities available include microfilm and microfiche readers, microfilm and microfiche cameras, microfilm and microfiche duplicators, photographic and electrostatic printers, and a computer system for data processing.

Data Products, Publications, Catalogs: Data catalogs, data book of AE Indices, midlatitude geomagnetic indices ASY and SYM (Provisional), provisional geomagnetic data plots, monthly tables of provisional hourly Equatorial Dst values.

Databases: Status of data collection, geomagnetic indices, hourly, 1minute and 1second geomagnetic data, etc.