Default Igrf-2005 Region Alaska Ak-1990.cof 1990 5 Ak-1995.cof 1995 5 AK-2000.cof 2000 5 Global British Geological Survey Bgs1600.cof 1600 50 Bgs1650.cof 1650 50 Bgs1700.cof 1700 50 Bgs1750.cof 1750 50 Bgs1800.cof 1800 50 Bgs1850.cof 1850 40 Bgs1890.cof 1890 20 Bgs1910.cof 1910 10 Global International Geomagnetic Reference Field Igrf-00.cof 1900 5 Igrf-05.cof 1905 5 Igrf-10.cof 1910 5 Igrf-15.cof 1915 5 Igrf-20.cof 1920 5 Igrf-25.cof 1925 5 Igrf-30.cof 1930 5 Igrf-35.cof 1935 5 Igrf-40.cof 1940 5 Igrf-95.cof 1995 5 Igrf-2000.cof 2000 5 Igrf-2005.cof 2005 5 Global Definitive Geomagnetic Reference Field Dgrf-45.cof 1945 5 Dgrf-50.cof 1950 5 Dgrf-55.cof 1955 5 Dgrf-60.cof 1960 5 Dgrf-65.cof 1965 5 Dgrf-70.cof 1970 5 Dgrf-75.cof 1975 5 Dgrf-80.cof 1980 5 Dgrf-85.cof 1985 5 Dgrf-90.cof 1990 5 Region Hawaii Hi-1990.cof 1990 5 Hi-1995.cof 1995 5 HI-2000.cof 2000 5 Region Continental US Us-1990.cof 1990 5 Us-1995.cof 1995 5 US-2000.cof 2000 5 Global World Magnetic Model (DoD) wmm-1995.cof 1995 5 wmm-2000.cof 2000 5