Syowa 12Z 300hPa height 1959 - - - 8469.5 - - 8236.0 - - 8364.1 - - 1960 - - 8429.6 8377.8 8422.3 8155.3 8147.7 8178.1 8119.0 8283.5 8378.8 8557.6 1961 8583.3 8627.4 8386.8 8364.1 8388.2 8338.1 8166.4 8191.7 8361.5 8347.6 8420.3 8489.9 1962 - - - - - - - - - - - - 1963 - - - - - - - - - - - - 1964 - - - - - - - - - - - - 1965 - - - - - - - - - - - - 1966 - 8631.9 8555.9 8403.6 8421.3 8207.4 8272.7 8090.1 8258.0 8236.0 8472.3 8619.6 1967 8709.6 8589.3 8480.8 8330.1 8343.9 8303.8 8255.8 8215.6 8282.1 8363.6 8472.4 8585.9 1968 8579.9 8637.9 - - - - - - - - - - 1969 - - - - - - - - - - - - 1970 - - - - - - - - - - - - 1971 - - - - - - - - - - - - 1972 - - - - - - - - - - - - 1973 - - - - - - - - - - - - 1974 - - 8453.1 8376.9 8359.5 8328.2 8229.3 8309.3 8203.0 8250.9 8497.5 8652.5 1975 8687.5 8588.2 8527.1 8294.7 8467.9 8288.5 8296.0 8170.2 8188.0 8224.2 8432.1 8604.4 1976 8697.7 8506.9 8412.1 8294.6 8170.8 8333.7 8145.4 8166.0 8150.8 8180.3 8515.9 8772.1 1977 8671.3 8562.0 8436.4 8392.4 8422.4 8380.3 8366.6 8303.1 8153.6 8241.2 8376.1 8541.3 1978 8502.3 8548.7 8451.4 8336.9 8316.2 8233.9 8269.5 8047.7 8208.6 8346.6 8443.2 8551.3 1979 8612.4 8529.2 8437.2 8435.8 8297.6 8179.8 8090.3 8108.7 8152.9 8322.8 8482.3 8660.9 1980 8622.0 8550.0 8527.0 8423.6 8373.1 8216.6 8343.8 8242.0 8286.7 8200.9 8498.2 8538.2 1981 8603.2 8601.3 8463.6 8353.5 8332.3 8236.5 8410.8 8325.2 8249.4 8216.5 8362.4 8519.5 1982 8617.3 8533.4 8355.2 8328.0 8310.6 8204.7 8180.6 8197.7 8149.7 8288.5 8550.2 8699.0 1983 8598.8 8539.6 8420.3 8386.3 8385.8 8272.9 8155.3 8130.6 8227.8 8246.5 8351.9 8481.3 1984 8610.2 8553.4 8451.5 8347.0 8445.5 8249.7 8239.3 8232.3 8171.4 8218.1 8420.8 8696.8 1985 8648.9 8547.6 8496.5 8437.0 8276.0 8335.3 8165.9 8144.1 8191.2 8208.8 8350.4 8477.1 1986 8619.8 8669.4 8517.3 8339.6 8369.9 8317.8 8187.8 8259.7 8134.9 8225.3 8413.4 8473.2 1987 8652.3 8559.5 8458.4 8382.2 8378.6 8294.4 8281.9 8126.3 8174.9 8246.0 8424.2 8555.4 1988 8680.2 8537.2 8568.0 8355.8 8358.1 8450.5 8133.5 8167.6 8307.8 8407.9 8379.9 8546.1 1989 8644.1 8535.6 8458.0 8354.7 8170.1 8228.8 8138.1 8187.3 8199.7 8248.4 8446.1 8575.1 1990 8608.3 8493.7 8454.4 8451.5 8443.5 8278.2 8390.4 8124.0 8035.3 8348.7 8442.9 8525.6 1991 8512.6 8641.9 8425.1 8319.8 8302.0 8378.7 8269.7 8215.0 8213.3 8232.5 8384.6 8727.1 1992 8664.1 8554.9 8493.8 8364.8 8456.5 8408.1 8230.7 8089.0 8116.9 8270.1 8308.0 8531.4 1993 8680.9 8502.7 8388.4 8346.1 8320.3 8285.1 8194.3 8160.2 8230.5 8286.8 8381.5 8493.1 1994 8525.2 8503.7 8402.7 8411.7 8305.8 8423.2 8254.0 8201.2 8198.4 8280.3 8431.6 8495.6 1995 8540.6 8568.3 8469.4 8370.7 8250.0 8257.4 8351.0 8234.3 8055.3 8318.1 8406.0 8545.1 1996 8573.4 8603.8 8398.0 8377.8 8270.1 8306.5 8370.3 8313.0 8427.4 8265.8 8463.5 8561.1 1997 8601.4 8546.1 8371.7 8376.0 8282.3 8368.1 8197.9 8180.7 8199.4 8247.7 8577.7 8566.3 1998 8548.4 8471.9 8417.3 8255.7 8351.5 8282.3 8220.5 8192.5 8190.0 8250.5 8342.3 8478.5 1999 8589.7 8587.5 8408.4 8247.5 8264.4 8379.3 8161.6 8275.5 8282.6 8187.4 8383.8 8425.9 2000 8476.8 8488.1 8351.0 8383.4 8229.8 8360.8 8226.3 8259.3 8325.0 8228.0 8455.8 8571.1 2001 8586.6 8568.9 8429.1 8340.3 8384.5 8403.6 8338.1 8134.4 8142.0 8279.1 8340.9 8465.4 2002 8564.9 8461.6 8529.2 8477.7 8504.9 8348.8 8322.3 8200.4 8208.4 8448.9 8379.8 8530.6 2003 8606.5 8568.6 8460.4 8334.7 8346.2 8287.3 8202.4 8154.4 8172.0 8276.1 8468.1 8650.0 2004 8580.4 8607.3 8403.0 8332.4 8281.2 8237.5 8073.7 8093.4 8134.5 8281.6 8361.5 8575.4 2005 8574.6 8486.3 8484.9 8344.8 8292.4 8339.5 8261.8 8223.5 8144.1 8221.6 8336.6 8680.2 2006 8572.8 8510.6 8401.0 8357.8 8284.3 8308.2 8118.1 8421.5 8219.7 8196.1 8433.8 8483.1 2007 8589.7 8487.6 8446.4 8415.2 8375.8 8408.2 8388.4 8234.9 8239.1 8309.9 8534.5 8442.6 2008 8500.0 8439.2 8495.5 8489.9 8400.2 8247.3 8278.4 8126.0 8196.8 8202.8 8357.1 8468.8 2009 8565.0 8488.9 8489.7 8338.6 8505.2 8471.4 8315.4 8199.0 8233.9 8303.7 8495.0 8538.4 2010 8672.3 8632.9 8474.3 8338.6 8280.7 8129.0 8145.9 8094.1 8221.4 8208.6 8333.4 8584.7 2011 8635.5 8572.9 8468.7 8454.8 8316.2 8439.7 8289.0 8324.2 8271.7 8298.3 8470.3 8496.0 2012 8491.0 8612.1 8400.6 8342.0 8356.0 8222.8 8184.3 8230.7 8203.2 8320.0 8583.3 8625.3 2013 8628.4 8547.1 8384.2 8305.4 8289.4 8389.7 8180.0 8305.3 8299.0 8264.3 8536.2 8559.7 2014 8606.6 8525.9 8428.3 8255.5 8372.7 8281.8 8187.2 8276.1 8247.7 8275.0 8414.5 8483.5 2015 8576.6 8495.2 8416.5 8273.3 8326.4 8255.4 8118.4 8102.4 8188.0 8381.7 8459.1 8510.6 2016 8541.0 8530.4 8464.6 8429.5 8348.3 8189.2 8166.2 8327.2 8177.0 8348.9 8499.5 8574.0 2017 8670.0 8557.7 8443.1 8335.6 8306.5 8216.3 8224.1 8100.0 8118.6 8340.8 8478.9 8567.1 2018 8594.7 8537.5 8483.1 8445.3 8411.8 8375.0 8204.1 8230.7 8160.7 8308.6 8360.0 8538.3 2019 8613.6 8655.5 8441.9 8365.0 8318.0 8204.6 8222.0 8135.0 8128.1 8390.6 8525.7 8658.3 2020 8625.8 8517.1 8399.2 8415.6 8336.8 8300.0 8237.3 - 8238.6 8217.9 - - 2021 - - 8615.5 8335.0 8285.0 8219.1 8247.3 8203.6 8282.5 8290.0 8399.3 8519.2 2022 8694.8 8540.7 8472.9 8379.3 8319.5 8358.3 8197.3 8172.3 8128.2 8237.5 8326.7 8433.6 2023 8572.0 8476.7 8488.7 8428.7 8311.0 8281.5 8231.7 8239.2 - 8369.2 8437.7 8545.8 2024 8544.3 8517.6 8398.8 8348.8 - - - - - - - -