Mcmurdo 12Z 50hPa height 1956 - - - - - - - - - - - - 1957 - - - 19419.5 19326.9 18993.6 18504.5 18442.3 18570.2 19208.8 20580.8 20731.9 1958 - - 20219.6 - 19416.2 18860.2 - - - 19181.0 19980.4 20516.6 1959 20692.5 20580.6 - - 19344.7 - - - - 18882.9 19447.9 - 1960 20630.1 20548.2 - - - - - - - - - - 1961 20693.7 20496.8 20126.8 19764.5 19236.8 - - - - - 19590.2 - 1962 20515.8 20463.6 20269.8 19694.9 - - 18442.6 18426.9 18719.6 19152.9 20299.9 - 1963 - 20525.4 - - - - - - - - 19936.2 20569.2 1964 20709.4 20455.1 - - - - - - - 19476.7 20534.2 20687.5 1965 20706.8 20608.6 - - - - - - - - 20090.9 - 1966 20649.9 - - - - - - - - - 19965.9 20762.4 1967 20756.6 20548.8 - - - - - - - 19627.0 20344.8 20653.5 1968 20714.0 20598.9 - - - - - - - 19445.5 20533.5 20752.5 1969 20809.1 20603.3 - - - - - - - 18850.5 19854.6 20538.6 1970 20662.4 20527.7 - - - - - - - - - - 1971 - - - - - - - - - - - - 1972 - - - - - - - - - - - - 1973 - - - - - - - - - - - - 1974 - - - - - - - - - - - - 1975 - - - - - - - - - 18844.9 - 20739.6 1976 20833.0 - - - - - - - - - 20404.9 20749.9 1977 20851.5 - - - - - - - - - 20319.4 20757.7 1978 20730.3 - - - - - - - - - - 20582.8 1979 20683.6 - - - - - - - - - 19973.4 20799.8 1980 20793.6 - - - - - - - - - 19845.5 - 1981 20659.3 20575.8 - - - - - - - - - - 1982 - - - - - - - - - - - - 1983 - - - - - - - - - - - 20639.3 1984 20784.2 - - - - - - - - - 20053.3 20641.1 1985 20767.0 20568.9 - - - - - - - - 19782.2 - 1986 - - - - - - - - - - - - 1987 - - - - - - - - - - - - 1988 20746.7 20491.5 - - - - - - - - 20470.7 20693.6 1989 20733.0 20624.8 - - - - - - - - 19551.9 20608.2 1990 20720.0 20476.0 - - - - - - - - - 20857.0 1991 - 20624.7 - - - - - - - - - 20757.6 1992 - - - - - - - - - 19305.8 19721.3 20421.8 1993 20750.7 - - - - - - - - - 19896.9 20435.0 1994 - - - - - - - - - - 20345.6 - 1995 20630.0 20558.2 - - - - - - - - 19481.0 20266.7 1996 20559.0 20498.2 - - - - - - - - 19545.5 - 1997 - 20528.9 - - - - - - - - 19861.1 20353.6 1998 20604.5 - - - - - - - - - - 20221.7 1999 20476.1 20483.7 - - - - - - - 18977.0 19302.9 - 2000 20318.2 20402.0 - - - - - - - 19570.0 20280.9 20607.6 2001 20638.4 - - - - - - - - 18910.3 19228.2 20117.6 2002 20597.5 20466.5 - - - - - - - 19759.6 20439.4 20441.3 2003 20683.7 20502.2 - - - - - - - 19058.5 19874.1 20566.1 2004 20627.6 20565.6 - - - - - - - 19312.9 19842.8 20656.0 2005 20670.9 20483.5 - - - - - - - 19253.3 20131.3 20495.2 2006 20649.6 20518.3 - - - - - - - 18831.9 19358.7 20419.0 2007 20512.3 20546.0 - - - - - - - 19244.0 19517.5 20098.8 2008 20612.2 20463.3 - - - - - - - 18907.1 19386.6 20250.1 2009 20619.5 20510.5 - - - - - - - 19142.7 19668.2 20583.6 2010 20765.4 20584.5 - - - - - - - 18984.8 19169.1 20176.2 2011 20589.8 20432.0 - - - - - - - 18860.7 19834.8 20199.4 2012 20580.0 - - - - - - - - 19684.2 20304.6 20743.9 2013 20729.0 20446.5 - - - - - - - 19413.7 19817.3 20662.0 2014 20672.4 20491.4 - - - - - - - 19221.7 20109.3 20279.6 2015 20629.3 20461.4 - - - - - - - - 19129.0 20194.5 2016 20456.9 20379.6 20018.4 19638.9 19342.5 - - - - 19337.8 20457.6 20686.1 2017 20763.6 20577.6 - - - - - - - 19385.7 19821.7 20449.3 2018 20647.9 20403.8 - - - - - - - 18717.8 19522.4 20323.7 2019 20501.9 20466.7 - - - - - - 19056.4 19732.1 20500.4 20644.7 2020 20665.2 20593.7 - - - - - - - 18612.1 19008.9 19884.3 2021 - 20412.8 20153.8 - - - - - - 18732.9 19123.4 19870.8 2022 20350.6 20500.0 - - - - - - - 18703.8 19218.9 20152.6 2023 20405.8 20398.8 - - - - - - 18547.0 18841.1 19211.5 19962.5 2024 20417.3 20370.8 - - - - - - - - - -