Syowa 00Z 700hPa height 1968 - - 2629.8 2577.4 2618.5 2585.1 2480.7 2478.4 2441.4 2536.2 2606.5 2667.9 1969 2735.7 2675.9 2595.4 2616.6 2571.8 2666.0 2458.8 2432.1 2466.6 2588.0 2604.2 2660.7 1970 2642.6 2630.4 2611.5 2582.5 2538.5 2560.0 2518.8 2444.8 2525.8 2551.5 2625.1 2701.6 1971 2712.8 2637.1 2598.9 2585.9 2636.3 2509.2 2540.1 2494.8 2545.1 2512.6 2574.4 2704.3 1972 2709.6 2651.9 2625.4 2650.1 2585.9 2620.2 2522.7 2591.6 2525.5 2510.4 2545.9 2678.1 1973 2702.0 2634.5 2553.9 2566.9 2624.6 2599.1 2517.4 2464.4 2513.9 2532.6 2589.6 2606.2 1974 2695.4 2611.0 2593.6 2594.6 2617.2 2583.5 2545.9 2612.9 2486.1 2543.7 2650.2 2718.0 1975 2717.4 2656.1 2639.6 2547.6 2680.0 2594.0 2593.5 2503.7 2481.3 2510.0 2588.3 2695.8 1976 2718.0 2640.5 2610.0 2538.6 2513.8 2595.6 2509.3 2503.1 2456.4 2502.5 2668.2 2802.6 1977 2739.0 2667.4 2622.6 2615.7 2618.8 2621.8 2595.6 2593.3 2472.1 2512.8 2573.1 2662.4 1978 2635.3 2656.8 2628.5 2580.3 2588.6 2563.0 2594.2 2436.8 2515.6 2562.2 2616.0 2668.2 1979 2671.8 2644.0 2593.7 2604.9 2547.0 2517.2 2449.6 2469.7 2484.8 2564.4 2624.2 2728.3 1980 2680.5 2660.0 2655.0 2633.6 2603.8 2535.7 2597.3 2571.2 2565.4 2505.9 2647.4 2664.9 1981 2679.9 2639.8 2639.8 2620.7 2577.3 2554.9 2647.9 2620.9 2527.8 2494.3 2579.4 2603.4 1982 2700.4 2639.2 2547.4 2545.8 2568.0 2521.3 2535.4 2520.0 2467.9 2557.6 2658.8 2748.3 1983 2703.7 2679.8 2613.5 2594.2 2612.4 2566.2 2511.0 2485.6 2520.4 2516.2 2558.7 2632.9 1984 2709.7 2668.4 2593.0 2590.5 2637.3 2570.4 2538.5 2555.5 2512.9 2503.9 2611.2 2740.9 1985 2713.5 2647.2 2617.4 2608.9 2569.5 2591.9 2465.6 2478.4 2499.6 2504.0 2545.0 2602.7 1986 2677.7 2708.9 2643.7 2557.9 2628.0 2583.8 2491.1 2561.2 2459.2 2508.6 2581.9 2615.1 1987 2725.0 2664.1 2621.4 2601.1 2614.2 2594.6 2579.1 2449.5 2521.0 2508.4 2553.1 2657.4 1988 2708.5 2630.2 2657.0 2593.1 2621.3 2688.7 2485.8 2517.3 2572.4 2640.5 2569.3 2645.6 1989 2695.6 2627.4 2614.4 2614.5 2482.4 2519.9 2478.8 2529.7 2546.2 2523.6 2610.5 2674.6 1990 2686.2 2620.5 2613.7 2642.2 2671.3 2601.2 2634.8 2481.1 2432.3 2576.2 2612.6 2648.6 1991 2622.9 2691.1 2588.1 2585.1 2572.1 2619.6 2586.9 2516.0 2534.5 2501.9 2605.0 2747.4 1992 2706.6 2674.8 2635.3 2600.7 2644.9 2645.6 2535.8 2469.2 2475.9 2547.8 2546.3 2642.1 1993 2733.7 2633.5 2595.9 2582.1 2542.7 2557.3 2479.8 2467.9 2503.4 2534.5 2578.9 2615.5 1994 2658.9 2610.5 2570.3 2596.9 2579.9 2659.3 2554.5 2499.0 2532.8 2531.5 2630.2 2605.6 1995 2636.8 2645.0 2603.7 2582.5 2531.6 2570.3 2627.9 2554.5 2418.3 2557.3 2610.0 2632.1 1996 2682.8 2682.8 2576.8 2572.3 2541.8 2575.5 2609.3 2573.1 2662.9 2532.5 2653.6 2673.8 1997 2675.6 2642.0 2561.3 2597.9 2547.1 2622.7 2518.0 2513.0 2517.6 2535.2 2690.9 2684.2 1998 2645.1 2615.4 2583.9 2482.6 2571.0 2545.6 2521.0 2509.8 2518.8 2523.7 2534.7 2613.8 1999 2662.0 2654.0 2598.4 2533.1 2529.7 2645.1 2507.2 2552.7 2568.5 2462.9 2578.2 2576.7 2000 2608.4 2605.4 2586.7 2587.9 2508.2 2584.3 2546.2 2552.0 2588.0 2519.9 2640.5 2702.9 2001 2664.6 2678.2 2615.9 2551.7 2605.2 2625.6 2590.3 2499.0 2479.5 2541.9 2561.8 2594.3 2002 2657.1 2575.6 2654.5 2614.0 2677.2 2589.4 2586.6 2499.2 2553.0 2635.0 2597.5 2609.3 2003 2701.9 2675.5 2608.7 2552.9 2594.4 2607.0 2531.3 2502.2 2489.0 2553.5 2613.5 2723.3 2004 2642.2 2696.7 2559.9 2576.4 2571.3 2511.9 2445.2 2477.9 2460.8 2550.6 2587.6 2683.8 2005 2679.0 2606.4 2617.7 2559.7 2565.9 2644.3 2562.1 2538.2 2482.7 2516.6 2581.3 2754.8 2006 2660.7 2633.3 2584.8 2585.3 2528.6 2564.6 2457.9 2659.0 2532.2 2495.3 2585.0 2634.5 2007 2674.0 2622.5 2629.2 2613.7 2611.3 2644.3 2649.4 2545.1 2563.0 2562.2 2654.4 2589.7 2008 2637.8 2583.1 2615.5 2622.6 2604.9 2536.5 2539.3 2493.6 2502.8 2492.0 2565.9 2605.4 2009 2644.7 2616.0 2593.9 2595.6 2660.9 2629.8 2576.5 2542.4 2535.7 2557.6 2632.2 2653.8 2010 2725.8 2705.5 2621.1 2576.4 2571.5 2470.6 2460.3 2446.9 2513.5 2498.5 2553.2 2683.8 2011 2677.5 2649.9 2628.3 2630.1 2552.3 2624.4 2585.2 2602.3 2547.4 2562.0 2656.3 2621.7 2012 2596.7 2655.7 2601.9 2563.6 2584.5 2538.6 2503.8 2516.1 2511.1 2547.7 2674.1 2688.3 2013 2666.7 2616.2 2561.1 2550.5 2556.5 2624.5 2529.3 2603.9 2584.2 2548.5 2639.6 2647.6 2014 2697.1 2627.7 2601.0 2556.1 2610.7 2579.6 2513.2 2545.0 2558.8 2548.6 2617.2 2594.2 2015 2662.3 2599.0 2565.3 2523.4 2565.2 2562.9 2488.0 2447.1 2506.7 2588.1 2639.8 2649.7 2016 2632.0 2623.1 2579.6 2558.1 2577.7 2508.0 2500.7 2572.4 2485.2 2566.3 2661.3 2688.5 2017 2722.1 - 2631.8 2584.6 2548.6 2565.9 2517.8 2494.4 2471.9 - - - 2018 - 2592.4 2629.1 2625.4 2634.2 2654.0 2495.6 2550.8 2467.0 2540.9 - 2657.0 2019 2654.4 - - 2589.3 - 2516.8 2582.0 2488.0 2464.6 2618.4 - - 2020 - 2642.9 - 2638.0 2547.0 2539.6 2568.1 2558.3 2544.6 2501.6 2564.1 - 2021 - 2579.4 2676.0 2549.3 2549.5 2539.3 2567.2 2511.5 2504.8 2528.5 2605.8 2622.6 2022 2687.3 2618.1 2583.4 2613.9 2596.9 2651.3 - 2516.1 - 2537.1 2508.6 - 2023 - - 2615.2 2586.7 2557.4 2596.1 2536.6 2535.1 - 2580.0 2582.6 2626.2 2024 2648.1 2620.6 2583.9 2546.9 - - - - - - - -