Vostok 00Z 50hPa height 1958 20597.0 20389.2 20020.0 - - - - - - 18841.2 19782.1 20431.1 1959 20636.0 20477.6 20084.9 19531.6 - - - - - 18691.4 19367.3 20445.1 1960 20617.1 20526.2 19888.8 - - - - - - - 20285.1 20669.2 1961 20536.3 20493.9 20011.2 19658.8 - - - - - - 19524.2 20292.1 1962 - - - - - - - - - - - - 1963 - - - - - - - - 18410.0 18765.2 19730.0 20523.7 1964 20639.6 20384.5 20044.6 19404.2 18886.4 - - - 18553.3 19236.4 20402.2 20671.4 1965 20652.7 20653.3 20150.4 19572.8 - - 18362.8 18376.0 18381.4 18952.5 19704.6 20604.3 1966 20618.0 20566.4 20342.8 19624.5 19174.7 18773.0 18638.7 18053.1 18424.1 18834.8 20003.6 20663.8 1967 20774.8 20552.8 20257.8 19568.6 19097.2 18786.5 18637.9 18223.3 18582.7 19122.8 20246.2 20704.5 1968 20678.7 20574.5 20183.0 19656.1 19118.3 18732.5 18284.0 18213.5 18346.9 19122.0 20573.6 20731.5 1969 20806.6 20564.2 20115.5 19704.3 19172.4 18940.4 18339.2 18196.4 18341.7 18773.0 19702.3 20513.8 1970 20605.0 20431.5 20163.5 19684.7 19087.4 18793.7 18547.1 18287.0 18535.7 19007.4 19809.0 20522.1 1971 20724.4 20563.1 20115.4 19689.7 19425.0 18746.1 18470.3 18386.0 18492.2 18993.0 19803.9 20656.8 1972 20771.1 20576.0 20197.5 19710.7 19120.4 18801.3 18560.0 18573.4 18520.0 18906.5 19772.0 20546.0 1973 20701.3 20454.1 20042.9 19709.6 19291.4 18829.2 - 18272.7 18519.0 18830.0 19965.9 20474.8 1974 20823.2 20487.9 20088.7 19587.6 19061.1 18826.8 18457.6 18357.3 18386.7 19083.2 20348.2 20843.1 1975 20827.7 20533.6 20202.1 19591.4 19279.7 18820.3 18610.0 18446.5 18546.0 18803.3 19724.4 20628.6 1976 20784.1 20494.6 20144.2 19561.2 19004.1 18699.1 18483.3 18354.7 18441.3 18830.6 20132.7 20698.2 1977 20809.3 20482.1 20056.5 19526.2 19250.0 18934.0 18600.0 18371.0 18340.8 18887.1 19983.8 20740.4 1978 20576.7 20475.0 20102.1 19579.6 19067.1 18660.0 18427.1 18075.3 18343.6 18843.1 19985.9 20466.0 1979 20581.6 20404.2 20046.2 19619.6 18964.1 18525.0 18201.8 18151.4 18307.8 19059.3 19911.4 20701.1 1980 20720.4 20572.9 20212.7 19892.7 19143.3 18775.5 18555.4 18343.6 18428.5 18762.4 19848.1 20656.8 1981 20633.7 20495.0 20182.1 19590.8 19026.4 18773.8 - - 18602.1 18813.3 19740.7 20595.4 1982 20670.0 20484.4 19958.9 19455.0 - - - - - - - - 1983 - - - 19498.1 19066.3 18675.0 18202.9 18162.8 18339.5 18682.9 19624.1 20442.3 1984 20685.4 20464.8 20077.2 19533.7 19199.2 18760.6 18319.1 18252.7 18356.3 18784.3 19798.9 20535.9 1985 20691.6 20350.5 20054.3 19591.9 18992.8 18732.7 18192.7 - 18224.8 18597.8 19306.2 20287.7 1986 20634.8 20567.6 20100.4 - 19203.3 18677.3 18322.4 18160.0 18272.3 18694.8 19834.1 20445.7 1987 20710.7 20413.8 20046.9 19493.8 18926.2 18770.0 18443.1 18050.0 18340.4 18645.4 19206.9 20464.5 1988 20687.5 20380.4 20015.7 19477.6 19118.0 18905.0 - - 18794.1 19394.5 20219.6 20618.1 1989 20625.5 20397.7 19996.1 19548.0 18866.7 18492.5 18315.5 18322.4 18460.0 18817.8 19548.1 20661.4 1990 20678.3 20395.5 20063.5 19603.2 19305.8 - - - 18415.7 18802.6 19420.4 20399.6 1991 20549.6 20476.7 20045.0 19736.2 19064.6 18883.7 18569.1 18410.0 18516.0 18877.6 19871.8 20788.5 1992 - - - - - - - - - - - - 1993 - - - - - - - - - - - - 1994 - - - - - - - - - - - - 1995 - - - - - - - - - - - - 1996 - - - - - - - - - - - - 1997 - - - - - - - - - - - - 1998 - - - - - - - - - - - - 1999 - - - - - - - - - - - - 2000 - - - - - - - - - - - - 2001 - - - - - - - - - - - - 2002 - - - - - - - - - - - - 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - - 2010 - - - - - - - - - - - - 2011 - - - - - - - - - - - - 2012 - - - - - - - - - - - - 2013 - - - - - - - - - - - - 2014 - - - - - - - - - - - - 2015 - - - - - - - - - - - - 2016 - - - - - - - - - - - - 2017 - - - - - - - - - - - - 2018 - - - - - - - - - - - - 2019 - - - - - - - - - - - - 2020 - - - - - - - - - - - - 2021 - - - - - - - - - - - - 2022 - - - - - - - - - - - - 2023 - - - - - - - - - - - - 2024 - - - - - - - - - - - -