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Table 1 Summary of IGRF generations, their intervals of validity, and related references

From: International Geomagnetic Reference Field: the 12th generation

Full name Short name Valid for Definitive for Reference
IGRF 12th generation IGRF-12 1900.0-2020.0 1945.0-2010.0 Thébault et al., this article
IGRF 11th generation IGRF-11 1900.0-2015.0 1945.0-2005.0 Finlay et al. (2010a)
IGRF 10th generation IGRF-10 1900.0-2010.0 1945.0-2000.0 Maus et al. (2005)
IGRF 9th generation IGRF-9 1900.0-2005.0 1945.0-2000.0 Macmillan et al. (2003)
IGRF 8th generation IGRF-8 1900.0-2005.0 1945.0-1990.0 Mandea and Macmillan (2000)
IGRF 7th generation IGRF-7 1900.0-2000.0 1945.0-1990.0 Barton (1997)
IGRF 6th generation IGRF-6 1945.0-1995.0 1945.0-1985.0 Langel (1992)
IGRF 5th generation IGRF-5 1945.0-1990.0 1945.0-1980.0 Langel et al. (1988)
IGRF 4th generation IGRF-4 1945.0-1990.0 1965.0-1980.0 Barraclough (1987)
IGRF 3rd generation IGRF-3 1965.0-1985.0 1965.0-1975.0 Peddie (1982)
IGRF 2nd generation IGRF-2 1955.0-1980.0 IAGA (1975)
IGRF 1st generation IGRF-1 1955.0-1975.0 Zmuda (1971)