Mawson 12Z 50hPa height 1967 - - - - - - - - - - - - 1968 - - - - - - - - - - - - 1969 - - - - - - - - - - - - 1970 - - - - - - - - - - - - 1971 - - - - - - - - - - - 20641.5 1972 20713.2 20580.5 20297.9 - - - - - - - - 20620.8 1973 20687.5 - 20229.4 - - - - - - 19173.2 19884.6 20526.2 1974 20701.1 20537.1 20228.0 19865.2 19505.7 19111.4 18795.6 18627.8 18914.0 19456.2 20311.9 20648.1 1975 20735.6 20623.2 20308.6 - - - - - - 19178.2 20099.6 20559.1 1976 - - - - - - - - - - - - 1977 - - - - - - - - - - 20066.7 20644.7 1978 20676.2 20654.7 - - - - - - - - - - 1979 - - 20218.9 20002.5 19281.4 18852.4 18535.9 18555.0 18817.0 19745.0 20335.4 20696.6 1980 20777.1 20722.9 20372.9 20107.1 19584.4 19070.0 18759.0 18804.5 18795.0 19198.8 20066.4 20613.5 1981 20681.4 20627.4 20289.6 19764.5 19367.8 19047.8 18925.8 18761.5 18989.2 19332.4 19902.8 20638.3 1982 20660.8 20540.5 20149.3 19771.8 19275.3 18809.4 18554.2 18541.7 18731.5 19034.3 20304.8 20696.8 1983 20667.3 20516.3 20211.4 19795.8 19351.1 18903.1 18563.0 18526.0 18877.8 19085.4 19784.5 20461.3 1984 20582.6 20492.3 20226.2 19823.7 19590.7 18996.2 18615.2 18648.9 18855.2 19209.0 19878.1 20599.6 1985 20661.7 20445.0 20176.1 19906.9 19391.9 18908.6 18703.1 18618.4 18608.6 18915.0 19497.5 20234.5 1986 20580.4 20575.6 20260.4 19768.4 19507.0 19044.8 18734.2 18621.9 18751.6 19241.0 19750.0 20313.3 1987 20658.4 20468.6 20244.1 19853.6 19255.9 19017.4 18752.1 18395.6 18603.7 18969.7 19533.7 - 1988 20640.7 - 20233.8 19784.7 - 19170.0 - 18829.2 19392.2 19672.8 20110.5 20587.9 1989 - - - - - - - - - - - - 1990 - - - - - - - - - - - - 1991 - - - - - 19107.8 18867.6 18779.4 18813.3 19548.0 19998.3 20690.5 1992 20651.2 20541.7 20239.3 19871.5 19495.3 19398.8 18791.7 18579.4 18682.9 18945.0 19726.7 20321.7 1993 20565.3 20493.0 20215.0 19790.0 19367.5 18850.0 18821.9 18525.4 18800.8 19208.6 19651.6 20223.0 1994 20514.2 20433.0 20085.6 19829.4 19478.8 19339.4 18782.4 18572.4 18592.3 19184.4 20140.8 20418.2 1995 20558.3 20500.2 20192.0 19872.9 19320.5 18878.8 18808.5 18787.4 18802.0 - - 20360.2 1996 20515.9 20453.4 20186.3 19843.9 19201.7 19165.8 18871.8 18873.6 19156.5 18913.0 19538.0 20371.0 1997 20617.1 20521.6 20173.1 19833.5 19423.9 18962.9 18672.4 18817.2 18901.2 18911.3 20205.8 20405.2 1998 20527.3 20417.2 20157.1 19716.1 19354.0 19129.6 18719.0 18525.0 18740.7 18899.7 19373.3 19961.6 1999 20441.1 20410.2 20124.2 19637.2 19350.8 19089.9 18628.5 18648.7 18873.8 18922.7 19363.7 19696.5 2000 20402.5 20402.6 20062.8 19837.1 19276.3 19016.6 18696.7 18643.0 18967.2 19272.1 19695.7 20557.1 2001 20606.0 20514.2 20229.4 19775.1 19431.3 19140.9 18744.4 18486.5 18592.8 18790.1 19143.7 20167.5 2002 20560.8 20430.5 20292.0 19936.5 19738.1 19345.5 18928.5 18764.7 19142.2 19952.3 20147.4 20507.0 2003 20605.9 20523.4 20255.2 19777.1 19309.1 19041.1 18625.1 18592.1 18704.1 18862.7 19825.3 20463.5 2004 20615.0 20538.3 20208.1 19888.7 19407.5 18966.5 18542.6 18626.3 18828.4 19131.9 19719.6 - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - 19927.6 19551.3 18936.8 18701.7 18495.5 18673.4 18907.6 19565.4 20056.8 2009 20457.0 20429.6 20205.2 19761.9 19430.8 19229.8 18942.1 - 18831.3 18819.2 20231.9 20398.9 2010 20613.6 20548.4 20182.7 19757.8 19265.9 18801.0 18561.8 18510.3 18732.2 18865.3 19414.3 20273.4 2011 20571.0 20479.8 20150.4 19910.8 19380.5 18995.6 18752.9 18772.5 18716.5 19196.9 19615.5 19980.6 2012 20412.6 20437.7 20196.9 19818.9 19336.8 18911.4 18695.6 18771.4 18818.2 19347.8 20334.3 20598.4 2013 20607.5 20502.6 20179.3 19724.2 19254.8 18977.7 18696.1 18769.4 19178.6 19329.4 20136.1 20565.7 2014 20578.6 20487.4 20208.3 19728.6 19442.7 - 18561.1 18579.2 18742.2 18999.9 19789.7 20187.2 2015 20538.5 20450.0 20158.6 19707.0 19339.6 18967.3 18609.6 18526.7 18634.3 18847.3 19468.8 19978.1 2016 20401.7 20425.3 20152.3 19765.8 19462.0 - 18609.1 18763.5 - - 20131.0 20483.0 2017 20639.5 20491.0 20146.4 19714.6 19344.6 18866.8 18738.1 18654.0 18959.4 19255.5 19722.0 20541.3 2018 20588.7 20496.0 20182.0 19943.5 19321.4 19037.7 18646.1 18623.3 18577.8 18930.8 19438.4 20486.8 2019 20542.5 20506.0 20232.8 19846.2 19396.9 - - 18651.8 19296.9 19666.7 20316.9 20554.0 2020 20642.7 20537.6 20222.6 19896.3 19415.0 18843.8 18795.0 18748.5 18813.0 18812.8 19197.2 19877.7 2021 20405.0 20394.7 20243.3 19803.7 19227.2 18891.9 - 18615.4 18686.2 18968.5 19318.6 19971.4 2022 20535.8 20421.4 20170.0 19772.6 19321.2 18950.9 18600.8 18580.0 18551.8 18821.4 19491.4 19853.1 2023 20459.3 20391.0 20238.9 19744.3 19357.9 19025.9 18610.0 18624.3 18925.0 18949.0 19280.6 20231.7 2024 20373.5 20395.0 20091.7 19740.0 - - - - - - - -