1. Intermagnet (1 min data since 1991)

2. Observations – 1 sec data Station Count: Total: 250 CPMN: 54 UCLA-built : 65 UM mags Ground Magnetometers THEMIS GBO/EPO MEASURE SAMBA McMAC SMALL IGPP-LANL

3. Geomagnetic Array/Chain/Station(In Alphabetical Order by Network/Station Name)AGO - Antarctica/Automatic Geophysical Observatories (Fluxgate Magnetometer PI L. J. Lanzerotti)Canadian Magnetic Observatories -Canadian National Geomagnetism Program Operated by the Geological Survey of Canada (GSC)CANOPUS/MARIA - Canadian Auroral Network for the Open Program Unified Study/Magnetometer and Riometer Array (PI: G. Rostoker)Status of CANOPUS by G. Rostoker with a postscript map Map and Data CANOPUS Real Time DataCPMN -The Circum-pan Pacific Magnetometer Network (1996 - present, PI: K. Yumoto)GIMA -Alaska/The Geophysical Institute Magnetometer Array (PI: J. Olson)Greenland Magnetometer Array - Ground-based Observations at the Danish Meteorological Institute (DMI) (PI: Jurgen Watermann)IGPP/LANL -IGPP/LANL Ground- Based Magnetometer Array (V. Angelopoulos/G.Reeves/G. Le)IMAGE - International Monitor for Auroral Geomagnetic EffectsINTERMAGNET - International Real-time Magnetic observatory NetworkKakioka Magnetic Observatory - Managed by Japan Meteorological AgencyKiruna Magnetogram -Station Managed by Swedish Institute of Space Physics (Ingemar Häggström)MACCS - Magnetometer Array for Cusp and Cleft Studies (M. Engebretson/W. J. Hughes)MAGIC -Magnetometer Array on the Greenland Ice Cap (PI: C. R. Clauer)SAMNET - The U.K. Sub-Auroral Magnetometer Network (1987-present, PI: David Milling)MEASURE - (PI: M. Moldwin)SGO - The Sodankyla Geophysical Observatory, Finland (PI: Johannes Kultima)SMALL - Sino-Magnetic Array at Low Latitudes (PI: G. Le/Y.-F. Gao)The 210 MM - 210 Degree Magnetic Meridian Magnetometer Network (1990-1995, PI: K. Yumoto)The Equatorial Magnetometer Network (1985-1995, PI: T-.I. Kitamura)The UK Geomagnetic Observatories - Managed by the British Geological Survey (BGS)Tromso - Geomagnetic data from the Auroral Observatory, University of Tromso, Norway (PI: Truls Lynne Hansen)UNSPWG -Magnetometer Array Managed by Australia/U. Newcastle Space Plasma Waves Group (B. Fraser)USGS - U. S. Geological Survey Magnetic Observatories (13 stations)VOS -Near-Real Time 1-min Geomagnetic Data from Russian Antarctic base Vostok (PI: Oleg Troshichev/Vladimir Papitashvili)AGO - Antarctica/Automatic Geophysical Observatories (Fluxgate Magnetometer PI L. J. Lanzerotti)Canadian Magnetic Observatories -Canadian National Geomagnetism Program Operated by the Geological Survey of Canada (GSC)CANOPUS/MARIA - Canadian Auroral Network for the Open Program Unified Study/Magnetometer and Riometer Array (PI: G. Rostoker)Status of CANOPUS by G. Rostoker with a postscript map Map and Data CANOPUS Real Time DataCPMN -The Circum-pan Pacific Magnetometer Network (1996 - present, PI: K. Yumoto)GIMA -Alaska/The Geophysical Institute Magnetometer Array (PI: J. Olson)Greenland Magnetometer Array - Ground-based Observations at the Danish Meteorological Institute (DMI) (PI: Jurgen Watermann)IGPP/LANL -IGPP/LANL Ground- Based Magnetometer Array (V. Angelopoulos/G.Reeves/G. Le)IMAGE - International Monitor for Auroral Geomagnetic EffectsINTERMAGNET - International Real-time Magnetic observatory NetworkKakioka Magnetic Observatory - Managed by Japan Meteorological AgencyKiruna Magnetogram -Station Managed by Swedish Institute of Space Physics (Ingemar Häggström)MACCS - Magnetometer Array for Cusp and Cleft Studies (M. Engebretson/W. J. Hughes)MAGIC -Magnetometer Array on the Greenland Ice Cap (PI: C. R. Clauer)SAMNET - The U.K. Sub-Auroral Magnetometer Network (1987-present, PI: David Milling)MEASURE - (PI: M. Moldwin)SGO - The Sodankyla Geophysical Observatory, Finland (PI: Johannes Kultima)SMALL - Sino-Magnetic Array at Low Latitudes (PI: G. Le/Y.-F. Gao)The 210 MM - 210 Degree Magnetic Meridian Magnetometer Network (1990-1995, PI: K. Yumoto)The Equatorial Magnetometer Network (1985-1995, PI: T-.I. Kitamura)The UK Geomagnetic Observatories - Managed by the British Geological Survey (BGS)Tromso - Geomagnetic data from the Auroral Observatory, University of Tromso, Norway (PI: Truls Lynne Hansen)UNSPWG -Magnetometer Array Managed by Australia/U. Newcastle Space Plasma Waves Group (B. Fraser)USGS - U. S. Geological Survey Magnetic Observatories (13 stations)VOS -Near-Real Time 1-min Geomagnetic Data from Russian Antarctic base Vostok (PI: Oleg Troshichev/Vladimir Papitashvili) Geomagnetic Array/Chain/Station(In Alphabetical Order by Network/Station Name) AGO -Antarctica/Automatic Geophysical Observatories (Fluxgate Magnetometer PI L. J. Lanzerotti) Canadian Magnetic Observatories -Canadian National Geomagnetism Program Operated by the Geological Survey of Canada (GSC) CANOPUS/MARIA - Canadian Auroral Network for the Open Program Unified Study/Magnetometer and Riometer Array (PI: G. Rostoker)Status of CANOPUS by G. Rostoker with a postscript map Map and Data CANOPUS Real Time Data CPMN -The Circum-pan Pacific Magnetometer Network (1996 - present, PI: K. Yumoto) GIMA -Alaska/The Geophysical Institute Magnetometer Array (PI: J. Olson) Greenland Magnetometer Array - Ground-based Observations at the Danish Meteorological Institute (DMI) (PI: Jurgen Watermann) IGPP/LANL -IGPP/LANL Ground-Based Magnetometer Array (V. Angelopoulos/G.Reeves/G. Le) IMAGE - International Monitor for Auroral Geomagnetic Effects INTERMAGNET - International Real-time Magnetic observatory Network Kakioka Magnetic Observatory - Managed by Japan Meteorological Agency Kiruna Magnetogram -Station Managed by Swedish Institute of Space Physics (Ingemar Häggström) MACCS - Magnetometer Array for Cusp and Cleft Studies (M. Engebretson/W. J. Hughes) MAGIC -Magnetometer Array on the Greenland Ice Cap (PI: C. R. Clauer) McMac – (PI: P. Chi) SAMNET - The U.K. Sub-Auroral Magnetometer Network (1987-present, PI: David Milling) MEASURE - (PI: M. Moldwin) SGO - The Sodankyla Geophysical Observatory, Finland (PI: Johannes Kultima) SAMBA – (PI: E. Zesta) SMALL - Sino-Magnetic Array at Low Latitudes (PI: G. Le/Y.-F. Gao) THEMIS (PI: V. Angelopolous) The 210 MM - 210 Degree Magnetic Meridian Magnetometer Network (1990-1995, PI: K. Yumoto) The Equatorial Magnetometer Network (1985-1995, PI: T-.I. Kitamura) The UK Geomagnetic Observatories - Managed by the British Geological Survey ( BGS)Tromso - Geomagnetic data from the Auroral Observatory, University of Tromso, Norway (PI: Truls Lynne Hansen) UNSPWG -Magnetometer Array Managed by Australia/U. Newcastle Space Plasma Waves Group (B. Fraser) USGS - U. S. Geological Survey Magnetic Observatories (13 stations) VOS -Near-Real Time 1-min Geomagnetic Data from Russian Antarctic base Vostok (PI: Oleg Troshichev/Vladimir Papitashvili)