Halley 12Z 50hPa height 1957 - - - - - - - - - 19002.2 20277.6 20773.0 1958 20722.9 20599.2 20153.6 19693.6 18973.3 18720.0 18416.0 18219.2 18291.7 18808.8 19784.6 20455.8 1959 20619.5 20570.5 20225.5 19594.7 19232.1 18847.3 18409.5 18379.6 18385.2 18869.0 19216.5 20342.0 1960 20547.7 20482.4 20037.0 19584.7 19212.7 18764.8 18445.6 18271.3 18474.4 18840.0 19660.0 20517.9 1961 20710.4 20581.8 - - - - - - - - - - 1962 - - 18955.4 - - - - - - - - - 1963 - - - - - - - - - - - - 1964 - - - - - - - - - - - - 1965 - - - - 19125.4 18670.7 18567.3 18498.0 - 18826.7 19471.5 - 1966 - 20616.4 - - - 18750.0 - 18258.0 18412.7 18921.3 19840.4 20630.5 1967 20749.6 20551.0 20175.6 19646.1 19111.8 18749.6 18447.4 18349.6 18436.2 18946.7 19798.9 20615.5 1968 20637.7 20591.2 20233.0 19723.6 19102.0 18611.2 18381.7 18292.9 18362.7 19078.6 20102.0 20688.0 1969 20767.1 20577.1 20181.8 19620.0 19128.9 18757.1 18425.4 18345.8 18494.2 18783.3 19448.2 - 1970 - 20462.0 20142.2 19611.3 19189.2 - 18556.2 18287.7 18572.9 19010.5 19993.2 - 1971 - 20511.0 20226.4 19912.0 19212.2 18924.2 18460.8 18429.5 18470.9 18928.5 20009.5 20575.8 1972 20679.0 20551.8 20217.2 19715.5 19230.5 18771.7 18573.1 18502.5 18528.4 18951.7 20142.9 20635.5 1973 20668.5 20488.0 20107.7 19540.0 19030.6 18762.6 18502.5 18364.1 18487.8 18986.7 19886.2 20559.4 1974 - 20463.0 20148.0 19621.1 19238.7 - 18394.5 18370.0 18464.3 18920.7 19873.6 20714.0 1975 20733.6 20486.4 20175.0 19671.5 19095.3 18726.2 - - - - - 20593.8 1976 20693.8 20526.2 20136.9 19782.7 19095.8 18789.2 18471.7 18260.0 18451.0 18925.3 19800.8 20734.8 1977 - 20488.2 20114.0 19702.2 - - 18486.7 - 18362.1 18830.0 19977.1 20542.6 1978 20700.8 20530.0 20201.7 19934.4 19350.8 - 18505.3 18298.0 18545.0 19120.0 20085.3 20568.4 1979 20719.1 20520.5 20229.2 - 19158.4 18706.2 18411.8 18297.7 18487.1 19005.7 19825.0 20670.6 1980 20702.9 20652.1 20205.0 19753.1 19271.4 18868.2 18534.0 18498.3 18587.6 18832.3 19706.7 20688.3 1981 - 20506.7 20230.8 19653.1 19235.6 - 18558.2 - - - - - 1982 - - 20070.8 19537.5 19224.6 - 18400.9 - 18465.0 18916.4 19695.4 20447.5 1983 20688.6 20508.7 20156.2 19746.7 19293.3 - - - 18545.9 18760.0 19759.5 20575.5 1984 - 20471.7 20164.2 19696.0 - - - - 18602.1 18781.0 19637.4 20613.2 1985 20715.2 20519.3 20224.3 19825.0 19237.3 18875.2 18481.2 18500.0 18594.1 18844.3 19322.3 20530.3 1986 20645.6 20609.3 20236.4 19746.7 19178.7 18836.5 18607.8 18443.9 18385.8 18898.1 19637.3 20338.3 1987 20646.4 20641.8 20159.2 19711.5 19346.0 18793.9 18558.0 18365.3 18419.6 18643.2 19085.2 20340.7 1988 20707.3 20518.8 20182.7 19697.7 19295.9 18831.3 18445.8 18504.8 18708.1 19075.6 19683.3 20662.6 1989 20687.7 20482.7 20213.0 19632.2 19126.0 18796.2 18577.0 18562.1 18556.2 18689.7 19573.8 20340.0 1990 20649.5 20515.3 20226.3 19738.0 19245.2 18782.9 18590.4 18374.2 18476.8 18820.5 19345.3 20018.5 1991 20573.9 20520.4 20077.3 19748.2 19107.3 18787.3 18580.0 18410.2 18607.8 18796.8 19812.5 20690.8 1992 - 20492.2 20024.0 19718.0 19209.0 18786.7 18555.4 18319.2 18457.6 18918.8 19563.4 20391.6 1993 20638.2 20486.7 20125.3 19592.0 19110.5 18698.8 18483.4 18369.6 18438.4 18585.4 19269.2 20287.5 1994 20587.0 20405.1 20104.3 19701.2 19189.1 18884.0 18482.3 18352.6 18443.2 18587.2 19429.4 20662.9 1995 20632.7 20478.1 20137.2 19624.8 19157.6 18851.9 - 18417.2 18426.9 18737.6 19115.0 20213.5 1996 20586.0 20510.4 20080.5 19621.8 19086.6 - - 18611.8 18549.3 18735.2 19163.5 20065.2 1997 20694.4 20468.3 20134.8 19609.0 19247.9 18855.1 18449.9 - 18426.6 18597.6 19471.9 20482.3 1998 20623.6 20572.1 - - - - - 18336.2 18398.4 18640.3 19197.3 20104.3 1999 20605.7 20448.9 20191.8 19658.7 - - - - 18537.6 18696.2 19207.7 19960.9 2000 20405.8 20425.6 20172.5 19652.8 19171.5 18774.8 18569.6 18353.0 18487.8 18687.7 19825.2 20518.7 2001 20549.9 20446.3 20087.5 19594.2 19188.1 18665.4 18492.7 18295.6 18477.2 18528.9 19224.7 19985.8 2002 20517.1 20412.4 20101.8 19790.7 19180.5 18750.7 18597.0 18404.1 18815.6 19149.6 20066.6 20521.1 2003 20588.4 20492.8 20163.7 19645.6 19126.5 18709.6 18420.2 18320.5 18436.6 18797.1 19607.3 20450.0 2004 20571.5 20440.8 20109.4 19727.4 19114.8 18727.3 18426.5 18248.9 18521.2 18981.6 19481.2 20250.6 2005 20670.9 20427.8 20167.8 19657.3 19092.9 18666.7 18459.5 18362.2 18479.9 18769.7 19695.2 20458.9 2006 20631.9 20406.9 20211.2 19681.0 19092.6 18886.2 18542.5 18416.2 18371.7 18631.6 19116.8 20131.7 2007 20585.7 20412.8 20142.9 19661.3 19290.0 18859.4 - 18421.7 18439.0 18764.2 19369.6 20138.0 2008 20498.4 20376.2 20159.9 19745.2 19180.7 18824.8 18531.3 18293.4 18528.7 18632.2 19142.0 19832.9 2009 20430.0 20383.4 20171.9 19604.8 19211.5 18868.8 18713.9 - 18462.9 18706.6 19259.4 20236.4 2010 20617.0 20503.4 20094.7 19570.1 19101.8 18748.5 - 18425.2 18520.0 18763.4 19264.7 19992.4 2011 20539.9 20470.7 20204.0 19668.8 19202.6 18814.5 18589.1 - 18443.3 18671.5 19173.1 20020.9 2012 20411.8 20442.9 20122.5 19766.1 19199.3 18709.6 - - 18428.8 18810.8 19913.5 20617.6 2013 20632.3 20422.8 20151.8 19671.8 19096.2 18958.1 - - 18565.2 18860.8 19992.7 20535.3 2014 20554.3 20396.2 20081.6 19753.3 19280.2 18909.0 - - - 18725.7 19226.5 20327.2 2015 20518.1 20421.3 20088.9 19644.7 19152.9 18733.9 - 18257.0 18274.7 18642.8 19053.8 20015.8 2016 20494.2 20416.5 20084.6 19587.6 19093.5 18800.9 18453.4 18439.2 18447.5 18794.8 19698.5 20622.9 2017 20621.2 20540.0 - - - - - - - - - 20439.4 2018 20545.3 20407.9 - - - - - - - - - 20437.9 2019 20513.1 20467.3 - - - - - - - - - 20598.0 2020 20610.7 - - - - - - - - - - - 2021 - - - - - - - - - - - 26268.6 2022 20515.0 - - - - - - - - - - 23373.3 2023 20432.6 - - - - - - - - - - 24816.2 2024 20472.7 - - - - - - - - - - -