Averaged Mean Zonal Flow from Hubble Space Telescope Images. 1995-1998 Planetographic Planetocentric Velocity Error in Velocity Number of (deg) (deg) (ms-1) (ms-1) Measurements -67.8 -64.9 27.4 15.6 4 -67.5 -64.7 24.1 12.3 6 -67.2 -64.3 22.6 9.8 8 -66.9 -64.0 30.0 10.0 3 -66.6 -63.7 24.5 1.8 5 -66.3 -63.3 22.4 6.8 9 -66.0 -63.0 25.5 8.0 9 -65.7 -62.7 21.4 6.9 9 -65.5 -62.4 17.1 6.3 7 -65.1 -62.0 16.6 3.5 12 -64.8 -61.7 13.5 2.4 12 -64.5 -61.4 10.5 2.4 12 -64.2 -61.1 7.7 2.0 12 -63.9 -60.7 7.5 2.7 19 -63.6 -60.4 8.7 2.8 15 -63.3 -60.1 9.2 2.2 14 -63.0 -59.8 9.8 3.6 15 -62.8 -59.5 9.9 4.9 15 -62.4 -59.1 12.9 7.3 20 -62.1 -58.8 17.3 6.7 15 -61.8 -58.5 18.9 7.9 15 -61.6 -58.2 24.2 10.3 13 -61.2 -57.8 28.6 8.4 16 -60.9 -57.5 25.8 6.8 12 -60.6 -57.2 19.7 3.3 11 -60.3 -56.9 18.2 3.1 12 -60.0 -56.6 13.4 2.8 17 -59.8 -56.3 10.3 5.4 18 -59.4 -55.9 9.0 3.2 24 -59.1 -55.6 6.5 2.7 18 -58.8 -55.3 5.3 2.1 18 -58.5 -55.0 3.8 2.7 18 -58.2 -54.7 2.7 2.5 18 -58.0 -54.4 1.4 2.6 16 -57.6 -54.0 1.2 2.7 24 -57.3 -53.7 0.3 1.5 18 -57.0 -53.4 0.1 2.2 18 -56.7 -53.1 -0.1 3.4 17 -56.4 -52.8 -0.6 2.6 18 -56.1 -52.5 -0.3 1.4 18 -55.9 -52.2 1.0 2.8 17 -55.5 -51.9 4.0 3.4 19 -55.2 -51.5 5.4 4.1 14 -54.9 -51.2 9.9 2.7 14 -54.6 -50.9 11.0 4.7 16 -54.3 -50.6 12.4 4.5 15 -54.0 -50.3 18.0 7.0 17 -53.7 -50.0 23.3 10.9 19 -53.4 -49.7 30.7 13.0 19 -53.2 -49.4 34.5 8.3 18 -52.9 -49.1 38.8 9.0 16 -52.5 -48.7 44.8 6.2 20 -52.2 -48.4 44.7 7.5 25 -51.9 -48.1 38.4 7.5 28 -51.6 -47.8 33.4 7.2 31 -51.3 -47.5 26.4 8.0 30 -51.0 -47.2 21.1 8.8 30 0.3 0.3 77.7 6.6 28 0.6 0.5 78.4 4.7 43 0.9 0.8 78.0 6.6 30 1.1 1.0 79.8 7.3 45 1.5 1.3 76.8 6.8 45 1.8 1.5 82.0 7.5 31 2.1 1.8 81.6 7.7 46 2.4 2.1 83.5 4.8 39 2.7 2.3 82.1 7.8 28 3.0 2.6 85.0 7.5 45 3.3 2.8 86.8 8.7 30 3.6 3.1 93.1 9.8 45 3.9 3.4 93.8 11.0 45 4.2 3.6 94.4 10.0 31 4.5 3.9 99.7 10.1 42 4.8 4.2 98.7 10.6 41 5.1 4.4 102.5 10.9 28 5.4 4.7 104.5 12.3 38 5.7 4.9 101.0 11.2 27 5.9 5.2 100.3 13.5 40 6.3 5.5 104.6 15.7 38 6.6 5.8 104.2 11.5 25 6.9 6.0 104.4 10.8 46 7.2 6.3 100.9 10.0 45 7.5 6.6 105.0 8.5 28 7.8 6.8 104.1 12.3 47 8.1 7.1 102.2 11.2 48 8.4 7.3 100.8 10.6 32 8.7 7.6 100.0 9.7 48 9.0 7.8 97.4 11.1 32 9.2 8.1 92.0 10.7 48 9.6 8.4 85.8 11.0 46 9.9 8.6 82.1 10.8 30 10.2 8.9 79.8 10.8 46 10.5 9.2 73.2 11.6 42 10.8 9.4 67.2 11.3 29 11.1 9.7 63.1 10.6 47 11.4 10.0 58.3 11.3 48 11.7 10.3 54.5 11.0 32 12.0 10.5 47.8 7.7 48 12.3 10.8 41.5 8.7 47 12.6 11.0 36.7 7.7 32 12.9 11.3 33.0 8.1 48 13.2 11.6 29.6 8.6 32 13.4 11.8 23.1 9.1 48 13.8 12.1 17.2 7.8 48 14.1 12.3 12.9 7.8 32 14.3 12.6 8.5 7.9 48 14.7 12.9 3.5 6.8 48 15.0 13.1 -1.0 6.8 32 15.2 13.4 -4.1 7.5 48 15.6 13.7 -8.2 6.7 48 15.9 13.9 -12.0 7.4 30 16.1 14.2 -14.5 7.3 48 16.5 14.5 -15.2 7.1 48 16.8 14.7 -15.0 6.8 32 17.0 15.0 -13.9 5.9 48 -50.7 -46.9 16.8 10.1 33 -50.4 -46.6 11.2 6.6 33 -50.1 -46.3 9.1 5.5 33 -49.8 -46.0 5.7 5.9 33 -49.5 -45.7 4.4 5.6 33 -49.2 -45.4 2.1 5.0 33 -48.9 -45.1 -0.3 5.9 33 -48.6 -44.8 -1.9 6.6 33 -48.3 -44.5 -4.1 8.1 30 -48.0 -44.2 -5.1 8.3 33 -47.8 -43.9 -5.6 9.7 28 -47.4 -43.6 -4.6 8.4 31 -47.2 -43.3 -2.7 9.5 28 -46.9 -43.0 -0.8 7.7 25 -46.5 -42.7 5.2 6.0 28 -46.3 -42.4 8.9 9.3 31 -45.9 -42.1 14.4 11.7 26 -45.6 -41.8 17.3 10.3 30 -45.3 -41.5 18.1 9.8 31 -45.0 -41.2 20.1 8.5 28 -44.7 -40.9 23.6 8.1 31 -44.4 -40.6 27.3 6.2 33 -44.1 -40.3 30.8 6.8 31 -43.8 -40.0 35.8 7.1 33 -43.5 -39.7 40.5 6.1 33 -43.2 -39.4 43.8 6.9 33 -42.9 -39.1 45.6 6.6 31 -42.6 -38.8 44.1 7.0 33 -42.3 -38.5 40.3 9.7 33 -42.0 -38.2 33.0 8.3 33 -41.7 -37.9 27.5 8.3 33 -41.4 -37.6 22.8 7.7 33 -41.1 -37.3 18.3 7.7 22 -40.9 -37.1 15.4 8.6 33 -40.6 -36.8 9.1 7.2 33 -40.2 -36.5 7.9 6.7 33 -39.9 -36.2 6.9 6.0 33 -39.6 -35.9 3.6 9.0 32 -39.3 -35.6 -2.0 8.2 33 -39.0 -35.3 -1.4 8.9 33 -38.7 -35.0 2.3 7.3 33 -38.4 -34.7 8.6 7.5 31 -38.1 -34.4 13.8 8.6 22 -37.9 -34.2 17.2 9.1 32 -37.6 -33.9 24.0 13.4 33 -37.2 -33.6 32.3 11.9 33 -36.9 -33.3 36.5 11.1 29 -36.6 -33.0 39.6 10.5 33 -36.3 -32.7 40.2 8.2 32 -36.0 -32.4 39.4 5.2 30 -35.7 -32.1 38.2 5.2 20 -35.5 -31.9 38.2 6.3 32 -35.1 -31.6 35.9 5.5 32 -34.8 -31.3 32.4 6.5 33 -34.5 -31.0 26.3 9.0 33 -34.2 -30.7 18.1 7.0 33 -33.9 -30.4 14.8 7.7 22 -33.7 -30.2 10.0 6.5 32 -33.3 -29.9 5.6 6.2 34 17.4 15.3 -11.9 5.1 48 17.7 15.6 -10.0 5.5 45 18.0 15.8 -6.1 7.2 30 18.3 16.1 -3.1 6.9 45 18.6 16.4 0.1 8.8 45 18.9 16.7 6.6 10.0 30 19.2 16.9 13.2 9.1 48 19.5 17.2 22.9 9.4 45 19.8 17.4 32.2 12.9 30 20.1 17.7 44.9 13.8 48 20.4 18.0 55.8 11.1 47 20.7 18.2 63.8 10.7 29 20.9 18.5 71.2 11.3 45 21.3 18.8 86.6 11.5 46 21.6 19.1 100.0 8.0 46 21.9 19.3 106.5 8.2 32 22.2 19.6 112.7 8.0 47 22.5 19.9 119.1 7.9 45 22.8 20.2 125.6 7.0 31 23.0 20.4 132.2 7.8 47 23.4 20.7 135.4 7.3 45 23.7 21.0 134.2 7.9 44 24.0 21.3 131.0 8.0 29 24.3 21.5 125.1 8.3 48 24.6 21.8 114.1 10.1 48 24.9 22.1 102.8 10.4 47 25.2 22.3 96.5 7.2 30 25.5 22.6 88.4 8.4 47 25.8 22.9 77.3 9.3 47 26.1 23.1 69.1 8.9 32 26.3 23.4 59.1 7.7 48 26.7 23.7 47.3 8.0 48 27.0 24.0 36.5 9.3 48 27.3 24.3 29.3 7.8 32 27.5 24.5 23.6 6.7 48 27.9 24.8 18.9 6.8 45 28.2 25.1 15.6 7.2 48 28.5 25.4 10.3 6.0 45 28.8 25.7 7.2 4.9 30 29.1 25.9 2.2 7.0 45 29.4 26.2 -1.8 8.1 48 29.7 26.5 -7.4 6.9 48 30.0 26.7 -10.4 6.9 32 30.2 27.0 -12.7 5.7 48 30.6 27.3 -14.7 5.7 48 30.9 27.6 -14.3 6.2 48 31.2 27.9 -13.5 6.5 48 31.5 28.1 -10.6 5.6 32 31.7 28.4 -7.7 6.5 48 32.1 28.7 -2.8 6.3 48 32.4 29.0 2.9 7.2 47 32.7 29.3 7.2 5.0 48 33.0 29.6 12.7 7.1 47 33.3 29.8 18.0 0.2 29 33.5 30.1 29.3 7.8 50 33.9 30.4 33.6 6.8 48 34.2 30.7 37.6 5.4 48 34.5 31.0 39.7 6.2 48 34.8 31.2 39.7 6.2 32 -33.0 -29.6 -0.8 9.2 33 -32.7 -29.3 -8.7 9.5 33 -32.4 -29.0 -11.6 11.1 22 -32.2 -28.8 -11.0 11.3 33 -31.8 -28.5 -9.4 9.2 33 -31.5 -28.2 -8.4 8.3 32 -31.2 -27.9 -4.5 9.7 33 -30.9 -27.6 3.0 7.2 32 -30.6 -27.3 8.9 5.8 22 -30.3 -27.1 14.1 6.7 33 -30.0 -26.8 19.1 8.7 31 -29.7 -26.5 25.9 9.8 30 -29.4 -26.2 29.3 10.9 20 -29.2 -26.0 30.9 12.0 30 -28.8 -25.7 32.9 11.2 28 -28.5 -25.4 30.4 8.9 30 -28.2 -25.1 33.5 6.0 33 -27.9 -24.8 34.6 5.9 20 -27.6 -24.6 38.0 4.7 28 -27.3 -24.3 42.9 4.3 24 -27.0 -24.0 48.9 6.6 24 -26.7 -23.7 54.4 5.9 17 -26.4 -23.5 56.8 8.0 27 -26.1 -23.2 52.3 9.1 21 -25.8 -22.9 39.1 6.4 15 -25.5 -22.6 32.9 5.1 10 -25.2 -22.4 26.5 4.4 16 -24.9 -22.1 24.4 7.4 18 -24.6 -21.8 19.4 4.5 18 -24.3 -21.5 16.0 9.8 14 -24.0 -21.3 11.3 8.9 25 -23.7 -21.0 8.7 6.9 27 -23.4 -20.7 5.3 6.5 18 -23.2 -20.5 1.7 7.8 27 -22.8 -20.2 -1.7 6.9 27 -22.5 -19.9 -5.9 7.4 27 -22.2 -19.6 -12.0 8.4 18 -21.9 -19.4 -17.0 8.1 27 -21.6 -19.1 -20.0 6.8 27 -21.3 -18.8 -25.7 7.3 18 -21.1 -18.6 -30.7 8.2 27 -20.7 -18.3 -37.2 8.5 27 -20.4 -18.0 -43.7 8.9 27 -20.1 -17.7 -48.6 7.9 18 -19.8 -17.5 -48.1 9.2 26 -19.5 -17.2 -48.2 8.8 26 -19.2 -16.9 -51.1 7.9 18 -18.9 -16.7 -51.3 10.1 27 -18.6 -16.4 -46.9 9.4 27 -18.3 -16.1 -41.8 11.1 18 -18.0 -15.9 -36.3 14.2 27 -17.7 -15.6 -34.1 10.4 27 -17.4 -15.3 -28.7 8.5 18 -17.1 -15.1 -24.1 10.1 30 -16.8 -14.8 -17.7 9.2 36 -16.5 -14.5 -11.4 8.2 24 -16.3 -14.3 -5.4 8.5 36 -15.9 -14.0 0.5 10.1 36 -15.6 -13.7 5.6 7.9 24 35.0 31.5 38.1 6.0 48 35.3 31.8 36.6 7.0 48 35.7 32.1 32.9 7.7 44 36.0 32.4 28.5 8.4 45 36.3 32.7 23.4 11.4 43 36.6 33.0 16.2 11.6 45 36.9 33.2 11.7 9.2 29 37.1 33.5 4.0 10.3 44 37.4 33.8 -0.4 9.9 47 37.8 34.1 -3.3 7.4 46 38.1 34.4 -10.8 9.6 42 38.4 34.7 -15.7 7.9 43 38.7 35.0 -14.5 7.9 45 39.0 35.3 -16.0 8.4 46 39.3 35.6 -14.0 9.5 46 39.6 35.9 -10.8 7.6 30 39.8 36.1 -6.5 7.3 48 40.1 36.4 -1.6 6.8 48 40.5 36.7 2.8 6.9 47 40.8 37.0 6.9 7.7 48 41.1 37.3 10.8 8.4 48 41.4 37.6 15.8 8.2 47 41.7 37.9 19.8 7.8 47 42.0 38.2 25.0 9.7 46 42.3 38.5 26.4 8.8 41 42.6 38.8 23.6 7.7 35 42.9 39.1 16.1 8.0 42 43.2 39.4 11.7 7.5 44 43.5 39.7 9.1 7.3 40 43.8 40.0 6.2 5.4 30 44.0 40.2 5.7 6.5 48 44.3 40.5 5.3 6.7 47 44.6 40.8 6.0 7.0 44 44.9 41.1 6.4 6.4 45 45.2 41.4 8.2 6.2 48 45.5 41.7 10.9 6.7 47 45.9 42.0 15.5 7.5 46 46.1 42.3 17.5 6.5 48 46.5 42.6 18.9 6.3 48 46.8 42.9 17.8 6.3 48 47.0 43.2 16.2 6.8 47 47.4 43.5 13.2 5.9 45 47.6 43.8 9.9 6.3 45 47.9 44.1 6.6 6.5 42 48.2 44.4 5.4 6.2 48 48.5 44.7 4.0 5.7 48 48.8 45.0 4.2 5.3 49 49.1 45.3 4.4 5.4 49 49.4 45.6 3.0 7.1 48 49.7 45.9 4.8 7.5 51 50.1 46.2 4.0 6.7 68 50.4 46.6 2.7 6.3 51 50.7 46.9 1.0 6.3 46 51.0 47.2 0.3 6.1 51 51.3 47.5 -0.1 6.8 51 51.6 47.8 -0.3 4.8 46 51.9 48.1 1.1 6.0 45 52.2 48.4 0.4 7.8 49 52.5 48.7 1.5 7.7 45 -15.4 -13.5 10.3 9.0 36 -15.0 -13.2 15.3 9.9 36 -14.7 -12.9 18.4 12.5 24 -14.5 -12.7 24.2 13.0 36 -14.1 -12.4 27.1 12.0 36 -13.8 -12.1 31.6 9.6 24 -13.6 -11.9 34.4 7.2 36 -13.2 -11.6 33.8 10.6 36 -12.9 -11.3 34.2 10.8 24 -12.7 -11.1 36.4 9.8 36 -12.3 -10.8 38.6 9.0 36 -12.0 -10.5 40.1 8.2 24 -11.7 -10.3 40.8 7.8 36 -11.4 -10.0 41.3 6.5 41 -11.1 -9.7 41.2 6.9 30 -10.8 -9.5 42.8 7.8 45 -10.5 -9.2 45.7 6.9 45 -10.2 -8.9 48.8 7.5 32 -9.9 -8.7 53.3 9.6 48 -9.6 -8.4 62.1 12.4 48 -9.3 -8.1 73.3 14.1 32 -9.0 -7.9 86.8 19.4 48 -8.7 -7.6 96.2 16.9 32 -8.5 -7.4 107.2 20.1 48 -8.1 -7.1 128.3 17.1 48 -7.8 -6.9 141.1 9.8 32 -7.5 -6.6 148.0 9.3 46 -7.2 -6.3 153.6 8.2 42 -6.9 -6.1 152.1 9.8 30 -6.6 -5.8 150.0 8.6 42 -6.3 -5.5 146.2 8.6 26 -6.1 -5.3 138.7 9.0 39 -5.7 -5.0 132.1 12.7 39 -5.4 -4.7 122.7 6.7 28 -5.1 -4.5 113.4 12.2 46 -4.8 -4.2 107.8 11.2 47 -4.5 -3.9 103.1 9.0 32 -4.2 -3.7 98.7 8.6 47 -3.9 -3.4 95.2 8.5 47 -3.6 -3.1 93.7 7.2 30 -3.3 -2.9 89.9 7.4 45 -3.0 -2.6 87.6 8.5 30 -2.7 -2.4 86.1 8.4 45 -2.4 -2.1 81.7 6.6 42 -2.1 -1.8 81.5 9.3 28 -1.8 -1.6 80.0 7.0 40 -1.5 -1.3 79.9 8.4 28 -1.3 -1.1 77.6 5.5 39 -0.9 -0.8 76.1 6.2 39 -0.6 -0.5 77.1 4.9 26 -0.3 -0.3 76.9 3.4 39 0.0 0.0 76.7 5.1 40 52.8 49.0 1.8 8.0 50 53.1 49.3 3.4 8.4 49 53.4 49.6 4.8 7.9 50 53.6 49.9 8.7 7.5 46 53.9 50.2 14.2 5.4 36 54.3 50.5 18.0 4.4 44 54.6 50.9 22.3 6.2 33 54.9 51.2 23.9 7.5 36 55.2 51.5 23.9 7.5 35 55.5 51.8 24.1 7.4 35 55.8 52.1 19.8 5.8 35 56.1 524.0 15.6 6.0 34 56.3 52.7 15.0 7.2 36 56.7 53.0 11.4 6.7 46 57.0 53.4 6.6 5.9 31 57.3 53.7 6.3 7.3 31 57.6 54.0 4.9 7.1 31 57.9 54.3 3.6 4.8 31 58.2 54.6 3.3 6.1 30 58.5 54.9 0.4 6.2 42 58.8 55.3 0.8 5.3 29 59.1 55.6 1.0 5.7 27 59.4 55.9 1.2 4.8 28 59.7 56.2 1.7 4.3 30 59.9 56.5 1.8 5.1 30 60.3 56.9 1.7 5.1 37 60.6 57.2 3.1 6.3 30 60.9 57.5 1.9 6.4 29 61.2 57.8 2.5 7.1 27 61.4 58.1 2.4 6.1 25 61.8 58.5 6.7 7.2 33 62.1 58.8 10.0 8.1 26 62.4 59.1 11.7 6.8 25 62.7 59.4 16.9 9.2 27 62.9 59.7 19.7 7.9 26 63.3 60.1 21.2 6.1 30 63.6 60.4 21.6 6.9 22 63.9 60.7 18.6 7.4 18 64.2 61.0 15.0 7.3 20 64.5 61.4 12.0 5.8 30 64.8 61.7 9.4 5.0 22 65.1 62.0 7.2 5.9 20 65.3 62.3 3.9 5.9 17 65.7 62.7 8.5 8.2 26 66.0 63.0 11.7 6.0 21 66.3 63.3 13.9 7.1 21 66.5 63.6 16.0 10.2 21 66.9 63.9 18.8 10.9 28 67.2 64.3 21.8 9.7 21 67.5 64.6 26.8 10.4 18 67.7 64.9 33.2 10.3 16 68.1 65.3 34.7 3.4 7 68.4 65.6 33.7 1.8 6 68.7 65.9 26.2 6.5 10 69.0 66.3 26.8 1.6 6 69.3 66.6 20.9 2.6 7 69.6 66.9 16.7 3.6 9 69.9 67.2 18.1 4.8 10 70.2 67.6 12.6 1.5 6 70.5 67.9 8.7 2.0 7 70.8 68.2 7.4 3.3 12 71.1 68.6 8.7 4.7 9 71.4 68.9 10.1 6.2 9 71.7 69.2 8.5 5.0 12 72.0 69.6 6.0 3.4 7 72.2 69.9 6.1 2.9 4 72.6 70.2 9.8 0.8 4 72.9 70.6 6.6 1.1 3 73.2 70.9 3.1 0.6 3 73.5 71.2 3.6 0.5 4 73.8 71.6 6.2 0.9 3 74.1 71.9 10.0 0.9 3 74.4 72.2 9.1 1.0 4 74.7 72.6 7.1 0.6 3 74.9 72.9 7.6 0.0 3 75.3 73.2 8.3 0.1 4 75.6 73.6 8.2 0.0 3 75.9 73.9 8.6 0.7 4 76.2 74.3 12.0 0.8 3 76.5 74.6 13.4 0.1 3 76.7 74.9 13.2 0.1 2