Syowa 12Z 50hPa height 1959 - - - 19946.6 - - - - - - - - 1960 - - - - - - - - - - 19864.3 20651.7 1961 - 20669.8 20293.9 19950.0 19640.1 19078.8 - 18571.6 18859.9 19276.4 20044.8 20419.0 1962 - - - - - - - - - - - - 1963 - - - - - - - - - - - - 1964 - - - - - - - - - - - - 1965 - - - - - - - - - - - - 1966 - 20718.0 20535.3 19981.7 19706.5 19018.5 - 18434.2 18754.3 19204.2 20134.9 20748.2 1967 20829.0 20576.4 20289.3 19852.9 - 18958.0 18603.8 18579.3 18870.9 19492.4 20177.3 20734.4 1968 20727.3 20678.1 - - - - - - - - - - 1969 - - - - - - - - - - - - 1970 - - - - - - - - - - - - 1971 - - - - - - - - - - - - 1972 - - - - - - - - - - - - 1973 - - - - - - - - - - - - 1974 - - 20225.5 19823.4 19414.9 18983.9 18687.4 18658.4 18873.6 19261.8 20208.5 20736.4 1975 20845.9 20697.7 20397.9 19737.1 19404.4 18848.9 18712.8 18725.6 18784.8 19134.1 20018.6 20607.7 1976 20749.9 20590.3 20216.7 19802.7 19202.1 18967.2 18510.4 18487.5 18714.1 18926.8 20133.8 20766.9 1977 20780.4 20571.1 20204.2 19779.9 19471.2 19155.4 18643.6 18662.7 18759.7 19308.3 19866.2 20630.7 1978 20695.0 20607.0 20315.0 19876.0 19339.5 18910.9 18648.6 18416.3 18794.1 19299.9 20051.9 20645.9 1979 20759.0 20599.8 20255.9 19896.6 19247.2 18805.3 18479.4 18510.7 18635.7 19545.9 20204.6 20732.0 1980 20817.9 20606.0 20286.4 19990.4 19531.6 19048.2 18788.8 18744.4 18769.2 18998.5 19911.1 20543.8 1981 20650.0 20538.9 20197.1 19684.0 19310.1 18943.2 18860.2 18725.7 18842.8 19148.8 19753.3 20521.0 1982 20585.6 20483.5 20112.8 19753.5 19173.4 18801.7 18578.3 18522.9 18601.7 18819.9 20169.4 20609.6 1983 20622.9 20520.4 20131.3 19741.7 19349.0 18851.1 18533.1 18457.9 18778.6 18949.1 19705.6 20471.9 1984 20602.6 20475.7 20172.9 19735.0 19459.0 18880.4 18597.9 18529.7 18619.9 19003.5 19696.2 20556.5 1985 20665.0 20433.4 20189.1 19851.5 19309.4 18790.7 18595.1 18507.9 18556.9 18750.8 19400.7 20217.3 1986 20572.1 20571.9 20198.9 19701.0 19412.4 18968.9 18691.5 18643.5 18539.2 19107.2 19596.0 20241.9 1987 20659.7 20435.9 20176.2 19779.0 19249.0 18858.2 18713.6 18331.9 18540.3 18831.5 19412.7 20293.8 1988 20668.7 20430.7 20193.0 19716.6 19294.3 19092.8 18501.4 18643.1 19077.4 19393.0 20030.1 20611.9 1989 20627.5 20478.0 20184.4 19704.1 19232.8 18825.7 18489.8 18439.3 18668.3 18887.2 19626.3 20507.2 1990 20620.4 20495.0 20193.0 19842.8 19466.0 18781.5 18812.6 18503.2 18405.5 19148.0 19753.7 20236.9 1991 20489.8 20472.9 20160.2 19720.8 19279.4 19097.6 18718.0 18575.2 18661.1 19313.3 19674.1 20665.7 1992 20638.3 20525.7 20153.9 19644.5 19458.2 19129.2 18731.6 18412.5 18527.0 18849.1 19550.1 20308.5 1993 20549.4 20454.8 20117.8 19709.1 19173.7 18759.0 18599.6 18466.1 18662.1 18921.0 19465.6 20175.2 1994 20485.2 20405.6 20053.5 19791.7 19320.6 19132.8 18634.2 18451.5 18548.3 18948.7 19753.1 20409.4 1995 20551.0 20470.8 20172.2 19739.2 19204.2 18815.0 18671.1 18657.9 18604.1 18780.8 19418.8 20076.7 1996 20529.3 20464.6 20131.0 19760.7 19167.3 18948.3 18761.1 18749.9 18848.2 18746.1 19395.2 20215.6 1997 20626.7 20497.8 20092.9 19717.0 19261.0 18848.9 18585.5 18522.5 18776.8 18711.3 19967.1 20373.1 1998 20510.9 20381.7 20089.4 19623.0 19264.6 18951.1 18583.9 18445.5 18508.3 18787.4 19231.7 19964.0 1999 20482.7 20436.5 20118.7 19574.7 19276.6 18956.9 18563.0 18557.3 18718.9 18765.0 19196.9 19644.6 2000 20435.0 20411.3 20035.3 19761.8 19213.6 18904.9 18555.8 18485.7 18740.6 18942.5 19591.2 20554.5 2001 20623.5 20486.8 20148.3 19743.9 19279.9 18995.4 18694.5 18365.7 18481.6 18669.9 19189.3 20139.1 2002 20587.2 20437.1 20247.4 19903.9 19600.9 19206.8 18795.0 18556.3 18839.8 19719.2 20066.6 20518.0 2003 20574.8 20515.6 20194.8 19700.2 19226.0 18909.9 18534.7 18423.2 18476.3 18760.3 19745.7 20444.5 2004 20559.5 20502.5 20120.7 19806.7 19289.0 18823.9 18452.8 18402.0 18687.6 18898.3 19507.9 20391.8 2005 20595.0 20436.8 20217.1 19675.2 19342.0 18863.1 18599.2 18513.2 18521.4 18935.1 19448.0 20563.7 2006 20555.6 20357.4 20134.9 19740.6 19163.0 18775.2 18554.2 18623.8 18492.3 18566.0 19191.0 19901.3 2007 20479.1 20390.2 20201.9 19762.3 19320.5 19094.7 18696.3 18560.7 18531.0 18795.2 19664.7 20084.7 2008 20448.0 20377.5 20208.6 19887.1 19524.8 18854.8 18628.2 18389.6 18506.3 18749.9 19380.9 19933.7 2009 20465.0 20429.3 20195.7 19683.1 19493.7 19123.8 18730.0 18518.7 18610.7 18761.0 20153.3 20337.1 2010 20625.8 20535.7 20167.1 19667.8 19222.2 18738.3 18488.2 18404.5 18618.6 18750.0 19312.4 20265.9 2011 20549.0 20488.6 20130.0 19838.0 19353.7 18980.0 18657.2 18686.5 18586.9 19011.3 19337.3 20041.7 2012 20390.0 20443.8 20150.6 19770.3 19264.8 18849.0 18644.3 18569.0 18638.0 19091.1 20258.0 20620.0 2013 20626.2 20493.9 20125.5 19650.3 19197.4 18967.2 18603.1 18619.0 18864.3 19065.3 20170.7 20547.7 2014 20566.1 20454.1 20124.1 19646.8 19362.7 18874.3 18509.7 18554.8 18600.3 18836.7 19563.8 20214.0 2015 20509.0 20431.1 20111.9 19655.5 19176.0 18853.6 18447.3 18363.3 18562.8 18762.0 19347.9 19934.8 2016 20407.4 20429.3 20126.5 19691.3 19220.3 18809.3 18517.2 18662.8 18631.2 18944.2 19839.0 20486.3 2017 20616.2 20477.5 20134.2 19681.5 19212.5 18775.2 18557.9 18418.7 18727.0 19049.4 19874.8 20521.7 2018 20559.3 20445.7 20138.7 19814.1 19282.0 18975.5 18570.0 18443.3 18479.2 18819.0 19439.3 20512.9 2019 20534.3 20494.8 20180.3 19767.7 19297.2 18800.3 18623.7 18408.7 18955.2 19236.0 20188.3 20551.3 2020 20617.3 20497.2 20150.0 19775.2 19220.7 18821.4 18608.3 18489.3 18669.3 18611.8 19083.3 19742.6 2021 20414.5 20355.6 20286.5 19654.1 19159.0 18831.7 18601.8 18422.6 18525.2 18787.1 19193.2 19910.0 2022 20551.4 20419.3 20142.3 19704.5 19225.2 18893.8 18566.4 18440.7 18445.2 18717.9 19294.2 19865.7 2023 20455.8 20380.6 20192.0 19777.8 - - - 18515.0 18724.4 18899.7 19306.4 20182.0 2024 20407.0 20408.1 20095.2 - - - - - - - - -