# IGRF-3 Coefficients 10 5 1965 1985 g/h n m 1965.0 1970.0 1975.0 1980.0 SV g 1 0 -30334 -30220 -30100 -29988 22.4 g 1 1 -2119 -2068 -2013 -1957 11.3 h 1 1 5776 5737 5675 5606 -15.9 g 2 0 -1662 -1781 -1902 -1997 -18.3 g 2 1 2997 3000 3010 3028 3.2 h 2 1 -2016 -2047 -2067 -2129 -12.7 g 2 2 1594 1611 1632 1662 7.0 h 2 2 114 25 -68 -199 -25.2 g 3 0 1297 1287 1276 1279 0.0 g 3 1 -2038 -2091 -2144 -2181 -6.5 h 3 1 -404 -366 -333 -335 0.2 g 3 2 1292 1278 1260 1251 -0.7 h 3 2 240 251 262 271 2.7 g 3 3 856 838 830 833 1.0 h 3 3 -165 -196 -223 -252 -7.9 g 4 0 957 952 946 938 -1.4 g 4 1 804 800 791 783 -1.4 h 4 1 148 167 191 212 4.6 g 4 2 479 461 438 398 -8.2 h 4 2 -269 -266 -265 -257 1.6 g 4 3 -390 -395 -405 -419 -1.8 h 4 3 13 26 39 53 2.9 g 4 4 252 234 216 199 -5.0 h 4 4 -269 -279 -288 -298 0.4 g 5 0 -219 -216 -218 -219 1.5 g 5 1 358 359 356 357 0.4 h 5 1 19 26 31 46 1.8 g 5 2 254 262 264 261 -0.8 h 5 2 128 139 148 149 -0.4 g 5 3 -31 -42 -59 -74 -3.3 h 5 3 -126 -139 -152 -150 0.0 g 5 4 -157 -160 -159 -162 0.2 h 5 4 -97 -91 -83 -78 1.3 g 5 5 -62 -56 -49 -48 1.4 h 5 5 81 83 88 92 2.1 g 6 0 45 43 45 49 0.4 g 6 1 61 64 66 65 0.0 h 6 1 -11 -12 -13 -15 -0.5 g 6 2 8 15 28 42 3.4 h 6 2 100 100 99 93 -1.4 g 6 3 -228 -212 -198 -192 0.8 h 6 3 68 72 75 71 0.0 g 6 4 4 2 1 4 0.8 h 6 4 -32 -37 -41 -43 -1.6 g 6 5 1 3 6 14 0.3 h 6 5 -8 -6 -4 -2 0.5 g 6 6 -111 -112 -111 -108 -0.1 h 6 6 -7 1 11 17 0.0 g 7 0 75 72 71 70 -1.0 g 7 1 -57 -57 -56 -59 -0.8 h 7 1 -61 -70 -77 -83 -0.4 g 7 2 4 1 1 2 0.4 h 7 2 -27 -27 -26 -28 0.4 g 7 3 13 14 16 20 0.5 h 7 3 -2 -4 -5 -5 0.2 g 7 4 -26 -22 -14 -13 1.6 h 7 4 6 8 10 16 1.4 g 7 5 -6 -2 0 1 0.1 h 7 5 26 23 22 18 -0.5 g 7 6 13 13 12 11 0.1 h 7 6 -23 -23 -23 -23 -0.1 g 7 7 1 -2 -5 -2 0.0 h 7 7 -12 -11 -12 -10 1.1 g 8 0 13 14 14 20 0.8 g 8 1 5 6 6 7 -0.2 h 8 1 7 7 6 7 -0.1 g 8 2 -4 -2 -1 1 -0.3 h 8 2 -12 -15 -16 -18 -0.7 g 8 3 -14 -13 -12 -11 0.3 h 8 3 9 6 4 4 0.0 g 8 4 0 -3 -8 -7 -0.8 h 8 4 -16 -17 -19 -22 -0.8 g 8 5 8 5 4 4 -0.2 h 8 5 4 6 6 9 0.2 g 8 6 -1 0 0 3 0.7 h 8 6 24 21 18 16 0.2 g 8 7 11 11 10 7 -0.3 h 8 7 -3 -6 -10 -13 -1.1 g 8 8 4 3 1 -1 1.2 h 8 8 -17 -16 -17 -15 0.8 g 9 0 8 8 7 6 0 g 9 1 10 10 10 11 0 h 9 1 -22 -21 -21 -21 0 g 9 2 2 2 2 2 0 h 9 2 15 16 16 16 0 g 9 3 -13 -12 -12 -12 0 h 9 3 7 6 7 9 0 g 9 4 10 10 10 9 0 h 9 4 -4 -4 -4 -5 0 g 9 5 -1 -1 -1 -3 0 h 9 5 -5 -5 -5 -7 0 g 9 6 -1 0 -1 -1 0 h 9 6 10 10 10 9 0 g 9 7 5 3 4 7 0 h 9 7 10 11 11 10 0 g 9 8 1 1 1 1 0 h 9 8 -4 -2 -3 -6 0 g 9 9 -2 -1 -2 -5 0 h 9 9 1 1 1 2 0 g 10 0 -2 -3 -3 -3 0 g 10 1 -3 -3 -3 -4 0 h 10 1 2 1 1 1 0 g 10 2 2 2 2 2 0 h 10 2 1 1 1 1 0 g 10 3 -5 -5 -5 -5 0 h 10 3 2 3 3 2 0 g 10 4 -2 -1 -2 -2 0 h 10 4 6 4 4 5 0 g 10 5 4 6 5 5 0 h 10 5 -4 -4 -4 -4 0 g 10 6 4 4 4 3 0 h 10 6 0 0 -1 -1 0 g 10 7 0 1 1 1 0 h 10 7 -2 -1 -1 -2 0 g 10 8 2 0 0 2 0 h 10 8 3 3 3 4 0 g 10 9 2 3 3 3 0 h 10 9 0 1 1 -1 0 g 10 10 0 -1 -1 0 0 h 10 10 -6 -4 -5 -6 0