Annual Mean Values of the Geomagnetic Absolute Observation data at Syowa Station MDATE D(deg:min) H(nT) I(deg:min) X(nT) Y(nT) Z(nT) F(nT) MC SAMPLE 1966.4 -45:32.5 18990.2 -65:51.4 13300.6 -13554.3 -42361.8 46427.4 4 10 1967.5 -45:39.5 19016.0 -65:45.7 13291.1 -13599.8 -42238.2 46353.0 4 3 1968.5 -45:40.5 18991.4 -65:44.1 13269.7 -13586.3 -42130.6 46213.6 4 12 1969.7 -45:46.3 18989.8 -65:39.4 13245.8 -13607.4 -41972.9 46068.9 4 18 1970.5 -45:51.0 18982.5 -65:37.0 13222.0 -13620.4 -41878.7 45981.7 4 21 1971.5 -45:51.6 18986.6 -65:30.6 13222.6 -13625.5 -41682.1 45801.6 4 26 1972.5 -45:53.9 18967.6 -65:26.3 13200.1 -13620.9 -41506.1 45645.6 4 12 1973.4 -45:58.5 18984.7 -65:21.9 13193.8 -13650.8 -41398.1 45543.1 4 11 1974.5 -45:55.8 18984.2 -65:17.6 13204.2 -13640.0 -41262.7 45423.3 4 10 1975.5 -46: 1.1 18974.8 -65:13.8 13176.8 -13653.4 -41119.0 45287.7 4 8 1976.5 -46:13.6 18800.0 -65:23.7 13006.1 -13575.1 -41054.0 45153.8 4 4 1977.4 -46: 5.3 18937.1 -65: 9.7 13133.8 -13642.5 -40911.9 45082.2 4 17 1978.5 -46:16.0 18989.0 -65: 3.8 13127.3 -13720.6 -40837.4 45036.5 4 22 1979.5 -46:18.5 18984.1 -65: 0.9 13113.6 -13727.0 -40738.1 44944.1 4 11 1980.3 -46:25.0 18934.7 -64:56.7 13053.9 -13715.7 -40591.1 44790.8 4 10 1981.4 -46:28.7 18960.9 -64:55.3 13056.9 -13749.0 -40496.5 44715.6 4 10 1982.5 -46:27.6 18994.8 -64:48.9 13084.9 -13769.0 -40385.9 44629.9 4 11 1983.5 -46:37.6 18993.8 -64:45.4 13043.9 -13806.6 -40283.6 44536.9 4 10 1984.6 -46:43.4 18998.2 -64:41.1 13023.6 -13831.8 -40168.4 44434.7 4 11 1985.5 -46:47.1 19007.0 -64:37.9 13014.8 -13852.0 -40085.5 44364.3 4 11 1986.5 -46:53.2 19018.0 -64:34.0 12997.7 -13883.2 -39990.9 44282.6 4 13 1987.5 -47: 1.4 19030.2 -64:29.7 12972.7 -13923.3 -39887.4 44194.5 4 8 1988.5 -47: 6.4 19028.5 -64:27.0 12951.5 -13940.7 -39803.4 44117.9 4 11 1989.4 -47:13.2 19038.8 -64:23.6 12931.0 -13973.8 -39724.1 44051.0 4 10 1990.5 -47:16.4 19048.1 -64:20.3 12924.1 -13992.8 -39645.8 43975.3 4 10 1991.5 -47:23.2 19045.7 -64:17.1 12895.0 -14016.3 -39546.8 43894.1 4 11 1992.5 -47:28.7 19089.3 -64:11.2 12902.0 -14069.0 -39465.2 43839.6 4 13 1993.5 -47:38.2 19093.1 -64: 7.7 12865.4 -14107.6 -39371.0 43756.4 4 13 1994.5 -47:42.3 19102.9 -64: 4.4 12855.3 -14130.1 -39293.7 43691.1 4 12 1995.5 -47:49.6 19116.4 -64: 0.8 12834.3 -14167.4 -39216.5 43627.7 4 12 1996.5 -47:57.5 19138.6 -63:56.9 12816.4 -14213.5 -39149.8 43577.5 4 12 1997.7 -48: 6.3 19159.9 -63:52.9 12794.5 -14262.0 -39079.6 43523.6 4 27 1998.5 -48:12.6 19158.2 -63:51.5 12766.9 -14284.4 -39033.8 43481.9 4 13 1999.5 -48:23.1 19170.2 -63:48.4 12731.4 -14332.1 -38970.8 43430.8 4 12 2000.6 -48:31.6 19167.9 -63:46.6 12694.5 -14361.7 -38913.3 43378.1 4 12 2001.5 -48:38.4 19175.6 -63:44.2 12670.8 -14392.9 -38861.3 43334.7 4 12 2002.5 -48:52.6 19181.0 -63:42.3 12614.8 -14449.1 -38818.1 43298.5 4 12 2003.6 -48:55.8 19196.5 -63:39.8 12611.8 -14472.3 -38778.9 43270.3 4 14 2004.4 -48:59.1 19201.7 -63:38.4 12601.3 -14488.3 -38750.4 43246.9 4 15 2005.5 -49: 9.9 19194.3 -63:37.2 12550.8 -14522.3 -38699.4 43197.6 4 12 2006.5 -49:18.7 19196.7 -63:35.5 12515.2 -14556.3 -38657.0 43161.0 4 12 2007.5 -49:26.9 19192.9 -63:34.4 12477.8 -14583.3 -38619.2 43125.7 4 12 2008.5 -49:34.3 19194.4 -63:33.1 12447.3 -14611.2 -38585.6 43096.1 4 12 2009.6 -49:43.7 19199.4 -63:31.3 12410.8 -14648.9 -38545.9 43062.9 4 14 2010.5 -49:52.4 19205.1 -63:30.0 12377.5 -14684.5 -38519.7 43041.9 4 14 2011.5 -50: 2.9 19219.4 -63:28.5 12341.8 -14733.2 -38507.4 43037.2 4 12 2012.5 -50:13.3 19225.8 -63:27.2 12301.1 -14775.5 -38482.9 43018.3 4 12 2013.5 -50:23.5 19236.1 -63:25.5 12263.9 -14819.8 -38455.9 42998.4 4 13 2014.5 -50:36.3 19243.1 -63:24.2 12212.8 -14870.9 -38433.6 42981.9 4 8 2015.5 -50:45.6 19249.5 -63:23.6 12176.6 -14908.8 -38428.0 42980.1 4 13 2016.4 -50:55.2 19256.8 -63:22.1 12139.6 -14948.4 -38401.9 42959.7 4 15 2017.5 -51: 5.2 19269.9 -63:20.5 12104.3 -14993.9 -38384.5 42949.9 4 12 2018.5 -51:15.6 19285.1 -63:18.8 12068.2 -15042.3 -38366.7 42940.9 4 11 2019.5 -51:23.9 19292.9 -63:17.7 12036.7 -15077.5 -38351.2 42930.4 4 12 2020.6 -51:35.1 19309.9 -63:16.0 11998.3 -15129.9 -38337.2 42925.6 4 8 2021.5 -51:44.5 19316.8 -63:14.9 11961.1 -15168.1 -38322.1 42915.6 4 12 2022.5 -51:54.1 19321.8 -63:14.5 11921.7 -15205.3 -38321.0 42916.4 4 11 2023.5 -52: 4.0 19326.9 -63:13.9 11881.2 -15243.5 -38313.9 42912.5 4 12 2024.2 -52:11.8 19317.2 -63:13.6 11840.3 -15263.1 -38287.1 42884.2 4 4