Mawson 12Z 500hPa height 1955 - - - - - - - - - - - - 1956 - - - - - - - - - - - - 1957 - - - - - - - - - - - - 1958 - - - - - - - - - - - - 1959 - - - - - - - - - - - - 1960 - - - - - - - - - - - - 1961 - - - - - - - - - - - - 1962 - - - - - - - - - - - - 1963 - - - - - - - - - - - - 1964 - - - - - - - - - - - - 1965 - - - - - - - - - - - - 1966 - - - - - - - - - - - - 1967 - - - - - - - - - 4970.7 5085.9 5107.3 1968 5131.0 5120.4 5081.1 - - - - - - - - - 1969 - - - - - - - - - 4966.5 - - 1970 - - - - - - - - - - 5095.2 5157.6 1971 5231.0 5148.6 5049.0 - - - - - - 4946.7 5031.4 5176.8 1972 5205.7 5120.3 5067.7 - - - - - - 4952.2 4993.2 5183.4 1973 5172.3 5093.2 4972.6 - - - - - - 4931.1 5013.8 5045.0 1974 5144.5 5093.2 5007.3 5027.1 4972.0 4965.4 4940.0 5001.0 4868.0 4951.6 5062.4 5205.0 1975 5166.1 5124.4 5062.3 - - - - - - 4907.1 5004.5 5119.2 1976 - - - - - - - - - 4885.0 5079.3 5255.6 1977 5195.5 5099.6 5028.1 - - - - - - 4970.0 5017.9 5086.5 1978 5075.9 5134.7 - - - - - - - - - - 1979 - - 4983.5 5054.8 4920.0 4881.4 4827.0 4852.1 4865.0 4919.7 5078.6 5165.8 1980 5174.2 5130.0 5076.5 5041.9 4968.7 4902.9 4985.9 4940.0 4939.6 4899.3 5069.0 5135.7 1981 5134.5 5118.2 5086.1 5027.2 4953.0 4926.9 5022.9 4984.8 4904.7 4892.6 5013.8 5105.8 1982 5145.2 5081.9 4978.7 4911.0 4924.8 4915.5 4892.6 4860.4 4828.9 4937.3 5098.6 5226.5 1983 5156.1 5100.4 5033.0 4957.7 4983.9 4947.2 4893.7 4875.3 4922.0 4910.7 4960.3 5040.3 1984 5153.5 5100.3 5032.7 4969.7 5048.7 4911.3 4848.7 4940.3 4895.7 4858.7 5025.4 5194.2 1985 5215.3 5092.1 5019.4 5029.0 4948.0 5012.3 4846.7 4858.1 4875.0 4890.0 4955.7 5059.4 1986 5141.9 5177.1 5092.4 4960.0 4990.7 4946.4 4849.0 4889.0 4839.3 4882.6 5015.3 5072.6 1987 5190.3 5106.1 5043.9 5012.3 4945.2 4980.7 4932.0 4780.7 4861.7 4902.9 5004.7 5097.5 1988 5163.7 5100.5 5042.1 4967.5 5021.8 5032.5 4853.3 4862.0 4944.5 5033.3 5003.7 5087.4 1989 - - - - - - - - - - - - 1990 - - - - - - - - - - - - 1991 - - - - - 4989.0 4999.6 4919.0 4912.6 4886.3 5052.5 5235.3 1992 5155.0 5145.8 5070.7 5052.6 5096.5 5067.3 4874.7 4862.5 4827.0 4935.7 4995.3 5088.5 1993 5203.3 5064.3 5032.6 4962.6 4877.7 4912.4 4855.6 4851.2 4885.8 4928.2 4982.9 5074.6 1994 5094.6 5050.4 4981.4 5013.8 4966.5 5077.0 4974.9 4871.4 4912.3 4923.5 5065.4 5066.5 1995 5104.9 5126.4 5028.4 5032.0 4936.6 4919.6 5017.2 4905.9 4787.0 - - 5110.8 1996 5150.2 5142.6 5013.5 4986.1 4915.1 4992.9 4984.5 4945.0 5057.2 4941.9 5083.3 5123.2 1997 5136.4 5086.0 4974.6 5037.1 4935.7 5017.7 4838.0 4878.1 4833.4 4926.4 5079.3 5160.4 1998 5120.8 5081.0 5040.5 4867.2 4945.8 4941.4 4906.7 4836.9 4941.9 4926.0 4970.5 5052.7 1999 5125.9 5082.0 5019.5 4897.2 4934.5 5054.8 4869.8 4880.1 4912.4 4833.6 4994.8 5001.4 2000 5049.0 5047.4 4981.7 5006.2 4889.3 4999.3 4914.4 4912.2 4957.3 4879.2 5075.0 5164.7 2001 5116.8 5124.0 5043.9 4928.4 4991.4 4945.1 4962.2 4839.6 4851.7 4919.5 4967.4 5041.5 2002 5103.7 5043.1 5085.9 5015.8 5084.5 4970.8 4974.8 4873.3 4932.3 5050.9 5019.6 5057.2 2003 5185.4 5119.7 5034.0 4965.0 4963.7 4992.8 4946.6 4872.0 4887.9 4926.7 5046.2 5173.3 2004 5131.0 5181.3 4996.4 4970.0 4960.5 4909.4 4843.6 4837.6 4835.3 4965.8 5016.9 - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - 5050.2 4993.1 4891.7 4941.8 4842.7 4919.2 4841.8 4972.7 5078.1 2009 5143.0 5112.1 5043.0 4989.3 4996.4 5106.7 4956.6 4946.0 4931.0 4954.0 5060.5 5104.1 2010 5201.6 5164.6 5035.4 4973.3 4907.0 4842.0 4786.1 4809.9 4908.9 4910.6 5018.6 5102.4 2011 5210.1 5097.6 5034.8 5051.0 4938.8 5040.3 4992.2 4965.7 4930.2 4929.8 5092.5 5052.2 2012 5049.0 5107.2 4996.2 4968.4 4964.7 4938.7 4875.2 4916.9 4843.9 4938.9 5087.2 5172.7 2013 5125.6 5072.0 4996.8 4976.2 4909.5 5018.9 4897.8 5007.6 4994.2 4980.4 5094.7 5117.3 2014 5155.1 5089.9 5034.8 4949.6 5015.8 4959.4 4909.8 4874.6 4948.0 4934.8 5044.0 5036.1 2015 5109.9 5037.0 4989.0 4920.3 4943.5 4924.2 4884.4 4840.7 4869.5 4988.8 5020.0 5103.7 2016 5080.0 5061.9 5000.5 4950.5 4936.8 4899.6 4876.0 4981.4 - - 5136.5 5106.0 2017 5192.8 5073.3 5008.3 4915.0 4960.4 4904.4 4956.2 4827.6 4880.0 4954.3 5045.0 5068.9 2018 5188.2 5074.2 5085.0 5060.0 4935.3 5070.0 4890.8 4925.3 4832.5 - 5005.3 5104.7 2019 5137.1 5128.3 5049.0 5033.3 4999.3 4935.0 4936.0 4879.5 4857.5 5064.3 5116.7 5238.7 2020 5167.3 5088.6 5056.2 5029.2 4962.7 4983.3 4965.0 4934.5 4880.0 4947.1 5064.1 5043.9 2021 5092.7 5021.9 5065.0 4965.6 4894.7 4908.3 4916.0 4892.3 4886.4 4908.0 5011.9 5067.4 2022 5138.8 - 5038.0 4979.4 4959.3 4985.7 4936.1 4922.9 4824.7 4937.3 4954.0 5019.2 2023 5026.5 5084.4 5129.1 5022.2 4992.9 4954.5 4901.3 4887.5 4920.0 4950.0 4997.5 5083.9 2024 5106.1 5080.7 4997.4 4965.5 - - - - - - - -