Davis 00Z 50hPa height 1959 - - - - - - - - - 18959.1 - - 1960 20546.7 - - - - - - - - - - - 1961 - - - - - - - - - - - - 1962 - 20416.2 20238.2 - - - - - - - - - 1963 - - - - - - - - - - - - 1964 - - - - - - - - - - - - 1965 - - - - - - - - - - - - 1966 - - - - - - - - - - - - 1967 - - - - - - - - - - - - 1968 - - - - - - - - - - - - 1969 - - - - - - - - - - - - 1970 20616.0 - - - - - - - - - - - 1971 - - 20239.1 - - - - - - - 20279.1 20631.4 1972 20700.8 20557.1 20243.3 19802.5 - - 18759.3 18863.6 18850.0 19384.7 20039.6 20557.9 1973 20665.3 20561.1 20169.6 19920.8 19624.7 19294.2 - - 19032.5 19100.0 19977.0 20506.1 1974 20668.1 20495.8 20152.9 19835.9 19415.6 - - - - 19561.1 20397.5 20646.0 1975 20745.9 20554.2 20339.1 - - 18951.7 18875.5 - - 19092.9 19906.1 20581.5 1976 20730.0 20522.7 20249.6 19813.6 19246.4 18889.2 - 18561.8 - 19005.9 20255.6 20642.0 1977 20690.0 20487.7 20149.2 19688.1 19494.1 19239.6 18726.8 18671.1 18665.6 19436.5 20066.8 20555.4 1978 20583.0 20520.0 20213.6 19769.6 19378.1 18916.7 18697.9 18353.6 18785.0 19120.0 20124.4 20427.5 1979 20622.7 20493.9 20086.8 19905.4 19230.0 18814.3 18530.5 18472.5 18651.5 19610.0 20248.4 20598.7 1980 20694.7 20582.6 20254.8 20038.6 19584.2 19161.4 18747.9 18686.1 18706.5 19163.3 20046.9 20537.4 1981 20612.8 20546.7 20258.9 19861.5 19328.9 19041.2 18858.5 18700.0 18849.6 19171.1 19880.0 20550.0 1982 20554.3 20475.9 20049.6 19685.7 19211.7 18861.2 18522.4 18402.0 18635.0 18967.5 20195.0 20675.7 1983 20620.6 20470.8 20125.6 19714.3 19293.7 18972.0 18534.3 18427.9 18721.0 18991.5 19768.3 20418.7 1984 20592.3 20450.3 20162.6 19754.3 19526.7 18950.3 18595.9 18571.0 18756.3 19089.4 19907.3 20567.7 1985 20665.3 20402.1 20115.8 19830.4 19375.2 18865.2 18621.6 18598.9 18540.0 18818.5 19402.8 20160.4 1986 20521.4 20511.9 20188.5 19719.0 19515.0 18993.8 18743.0 18479.6 18681.2 19072.4 19810.0 20361.0 1987 20641.3 20445.9 20197.0 19816.7 19180.0 19014.4 18656.0 18310.0 18485.3 18873.7 19529.3 20324.3 1988 20611.7 20356.8 20163.7 19648.2 - 19061.4 18664.3 18851.5 19368.3 19719.5 20146.9 20533.3 1989 20592.5 20490.9 20212.2 19825.4 19279.6 18890.9 18630.4 18545.0 18697.1 19071.7 19683.5 20595.2 1990 20629.3 20503.2 20203.9 19905.2 19626.9 18939.6 18992.3 18531.3 18531.8 19192.9 19681.4 20385.8 1991 20504.6 20427.1 20255.2 19842.7 19375.8 19166.1 18889.6 18713.0 18821.8 19404.7 19891.9 20673.2 1992 20635.3 20527.1 20191.5 19798.5 19576.4 19376.7 18824.3 18568.0 18670.4 18982.3 19616.7 20284.5 1993 20579.4 20473.8 20247.9 19760.5 19321.0 18824.0 18751.4 18478.7 18724.6 19130.5 19674.5 20240.4 1994 20523.0 20402.4 20049.6 19738.4 19508.2 - 18762.3 18547.8 18587.4 19172.3 20268.6 20340.7 1995 20530.2 20463.5 20170.3 19901.5 19287.8 18903.3 18916.1 18645.2 18731.0 18939.6 19826.9 20087.9 1996 20497.0 20439.4 20162.2 19814.1 19143.3 19155.0 18782.4 18754.8 19129.7 18880.6 19520.9 20421.1 1997 20586.3 20484.7 20153.5 19761.0 19361.1 18950.0 18547.3 18700.6 18762.2 18919.5 20130.1 20394.3 1998 20494.2 20403.7 20107.9 19649.1 19267.4 19130.3 18691.3 18500.6 18720.4 18916.6 19358.2 19900.0 1999 20398.3 20393.2 20117.7 19621.7 19291.5 19086.6 18598.4 18533.2 18818.2 18919.4 19374.2 19729.6 2000 20355.6 20390.4 20065.7 19781.0 19292.2 19001.3 18680.0 18584.6 18918.7 19289.3 19723.0 20564.9 2001 20593.6 20496.3 20195.6 19687.1 19458.9 19096.4 18664.8 18446.2 18546.0 18832.0 19114.7 20150.7 2002 20547.9 20403.2 20261.6 19867.8 19703.8 19266.5 18888.7 18639.9 19225.6 19880.8 20164.6 20477.3 2003 20589.0 20496.8 20224.6 19707.2 19284.2 19019.7 18614.4 18532.8 18739.8 18849.0 19769.7 20445.2 2004 20570.0 20489.1 20171.7 19819.1 19442.5 18902.6 - 18677.2 18718.3 19202.9 19801.1 20500.9 2005 20572.7 20469.6 20207.2 19646.4 19527.5 19087.6 18715.8 18655.2 18893.3 19265.7 19601.1 20530.6 2006 20534.1 20397.1 20174.1 19864.7 19230.1 18780.4 18522.5 18608.6 18623.7 18651.5 19275.0 20054.9 2007 20463.3 20409.4 20198.6 19881.3 19427.1 19156.7 18772.6 18666.8 18797.7 19055.2 19633.9 20052.0 2008 20435.5 20382.5 20194.5 19887.4 19554.2 18845.8 18635.3 18451.3 18636.0 18909.3 19563.3 20101.8 2009 20434.6 20440.0 20202.4 19763.6 19371.6 19134.3 18802.1 18609.5 18788.5 18837.0 20116.8 20428.7 2010 20604.5 20521.8 20185.2 19761.3 19237.6 18773.9 18532.3 18474.6 18692.8 18833.8 19372.8 20248.2 2011 20554.3 20451.0 20148.7 19866.1 19340.3 18929.2 18788.4 - 18712.6 19138.7 19784.3 19955.8 2012 20408.7 20424.0 20200.4 19824.0 19324.1 18909.5 18617.1 18731.8 18838.8 19425.9 20351.8 20597.9 2013 20612.3 20475.4 20134.2 19688.9 19277.6 18979.9 18656.4 18680.9 19290.4 19385.3 20015.7 20564.1 2014 20569.5 20467.4 20186.4 19719.4 19443.4 19032.9 - 18439.6 18742.5 19029.2 19876.3 20138.9 2015 20516.6 20417.3 20270.6 - - - - - - - 19454.0 19968.6 2016 20388.0 20405.2 20076.7 19746.9 19290.0 18868.7 18628.8 18756.9 18801.7 19190.0 20133.7 20499.3 2017 20622.1 20505.6 20155.2 19653.2 19285.9 18861.9 18716.8 18586.4 18919.0 19213.3 19632.5 20537.6 2018 20576.1 20485.8 20160.4 19934.6 19295.2 19013.0 18611.5 18646.2 18528.5 18893.0 19435.4 20470.6 2019 20505.5 20498.6 20205.8 19848.8 19327.2 18912.6 18833.4 18732.8 19314.1 19766.2 20401.0 20537.1 2020 20631.3 20542.8 20184.0 19894.8 19436.2 18853.3 18779.7 18796.2 18743.4 18737.5 19169.7 19845.8 2021 20432.4 20401.8 20195.5 19800.3 19183.4 18875.4 18678.9 18553.9 18626.2 18897.5 19317.2 19895.7 2022 20508.6 20433.3 20140.0 19717.5 19321.0 19067.3 18611.7 18597.9 18540.3 18848.6 19383.9 19848.9 2023 20440.0 20390.9 20224.8 19815.6 19313.3 19050.7 18603.9 18594.8 18810.8 18974.0 19229.3 20201.0 2024 20337.8 20383.5 20087.5 19718.3 - - - - - - - -