Davis 12Z 700hPa height 1971 - - - - - - - - - 2556.5 2596.3 2716.8 1972 2719.7 2657.6 2655.5 - - - - - - - - 2708.2 1973 2711.0 2618.4 2537.0 - - - - - - 2570.3 2619.7 2583.0 1974 2670.0 2615.7 2567.4 - - - - - - 2576.1 2662.7 2742.6 1975 2716.7 2665.0 2611.3 - - - - - - - 2597.3 2687.7 1976 - 2653.6 2596.8 - - - - - - 2520.3 2658.7 2787.1 1977 2732.3 2658.2 2599.0 - - - - - - 2550.0 2591.7 2664.2 1978 2603.6 - - - - - - - - - - - 1979 - - - - - - - - - - - - 1980 - - - - - - - - - - - - 1981 - - - - - - - - - - - - 1982 - - - - - - - - - - - - 1983 - - - - - - - - - - - - 1984 - - - - - - - - - - - - 1985 - - - - - - - - - - - - 1986 - - - - - - - - - - - - 1987 - - - - - - - - - - - - 1988 - - - - - - - - - - - - 1989 - - 2592.3 2586.0 2449.0 2533.0 2500.0 2573.5 2538.3 2538.1 2628.7 2677.7 1990 2702.3 2621.1 2611.0 2664.7 2648.4 2579.7 2656.8 2492.3 2455.7 2567.7 2625.0 2660.6 1991 2621.0 2646.7 2566.5 2587.1 2570.6 2620.0 2631.7 2528.5 2553.9 2502.7 2616.1 2738.5 1992 2693.2 2703.9 2615.6 2562.6 2663.9 2621.8 2517.8 2502.0 2459.4 2550.6 2591.9 2615.1 1993 2738.9 2600.1 2583.3 2555.3 2465.8 2521.9 2455.0 2443.1 2477.2 2493.7 2573.0 2622.2 1994 2661.3 2577.2 2548.8 2588.8 2576.8 - 2567.5 2478.1 2527.4 2525.0 2645.3 2600.1 1995 2640.0 2634.5 2592.4 2584.3 2528.1 2567.0 2668.2 2525.6 2430.0 2548.4 2614.0 2616.2 1996 2684.1 2669.5 2573.1 2565.1 2528.2 2589.5 2564.9 2554.4 2623.0 2527.2 2652.2 2675.5 1997 2666.8 2635.6 2534.6 2596.1 2518.3 2604.2 2470.0 2498.1 2478.9 2538.1 2639.4 2698.7 1998 2644.8 2626.9 2560.0 2435.4 2530.7 2522.4 2529.4 2484.5 2548.1 2541.1 2545.8 2594.4 1999 2650.6 2651.2 2617.6 2526.9 2520.8 2638.7 2522.4 2486.7 2517.9 2453.9 2568.9 2574.7 2000 2606.7 2599.6 2590.5 2594.6 2515.7 2588.0 2539.5 2521.7 2565.8 2464.5 2643.8 2709.5 2001 2657.8 2691.9 2596.2 2517.4 2573.6 2528.0 2557.1 2491.8 2478.7 2515.3 2569.1 2624.9 2002 2634.6 2571.6 2644.8 2567.2 2663.7 2564.4 2578.1 2473.8 2555.3 2621.3 2602.3 2601.0 2003 2716.2 2667.3 2608.8 2539.0 2565.2 2640.9 2551.2 2483.0 2525.2 2539.2 2604.8 2705.3 2004 2667.0 2697.9 2558.1 2540.1 2583.0 2523.8 - 2499.4 2469.1 2563.3 2613.3 - 2005 - - - - - - - - - - 2625.3 2756.5 2006 2668.7 2632.4 - - - - - - - - 2646.3 2638.5 2007 2676.3 2613.7 2612.8 2616.7 2597.0 2627.1 2657.4 2557.1 2539.8 2556.6 2622.8 2613.6 2008 2636.1 2586.3 - - - - - - - - - 2707.3 2009 2668.3 2663.0 - - - - - - - - 2637.8 2649.6 2010 2725.2 2674.8 2611.0 2577.4 2547.8 2490.5 2426.2 2452.0 2520.9 2529.4 2589.5 2681.4 2011 2719.5 2613.2 2614.1 2585.5 2548.4 2608.4 2601.1 2484.9 2557.4 2522.8 2681.7 2593.2 2012 2605.3 2652.3 2581.6 2565.7 2554.7 2574.7 2477.5 2505.3 2491.0 2526.0 - 2709.0 2013 2678.2 - - - - - - - - - 2662.1 2662.3 2014 2684.3 2628.5 2598.3 2553.6 2617.2 2541.8 2516.9 2494.8 2566.3 2548.0 2618.5 2607.8 2015 2652.5 - 2539.1 2521.4 2518.0 2549.3 2504.7 2474.8 2496.4 2572.3 2578.2 2654.5 2016 2619.3 2617.7 - - - - - - - - 2662.1 2678.0 2017 2717.4 2661.6 2581.9 2504.0 2528.5 2541.4 2557.2 2469.0 2481.1 2534.1 2601.5 2640.5 2018 2649.0 2631.5 2612.7 2631.2 2562.2 2630.4 2531.9 2582.5 2463.7 2492.9 2555.7 2652.0 2019 2641.0 2662.0 2610.9 2598.6 2604.9 2538.7 2567.1 2529.7 2493.4 2605.7 2683.4 2739.7 2020 2714.7 2638.5 2539.6 2591.4 2574.1 2580.1 2567.8 2608.0 2531.6 2544.5 2633.7 2596.6 2021 2624.6 2592.2 2609.0 2537.4 2537.3 2543.2 2591.5 2511.6 2485.6 2540.6 2578.8 2608.5 2022 2653.7 2609.2 2594.8 2548.1 2584.0 2626.3 2525.1 2544.4 2490.8 2549.4 2526.2 2587.4 2023 2590.6 2622.0 2610.9 2598.0 2559.2 2601.1 2559.8 2501.2 2555.9 2533.4 2562.8 2606.9 2024 2646.8 2591.6 2568.2 2533.9 - - - - - - - -