% Orbital Velocity Derived Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 25 19 18 22 25 26 22 51 81 107 140 155 349 335 281 246 211 171 188 137 112 114 107 97 73 55 28 55 15 35 38 28 24 34 24 29 23 45 21 26 12 17 15 22 25 22 32 7 54 33 35 71 76 60 39 52 23 34 68 42 70 35 87 -28 69 98 62 57 32 -14 -39 -9 -28 17 -33 18 -24 41 34 -14 -22 45 -30 65 -45 -35 -61 35 -6 29 50 -50 -65 -37 -57 -39 87 22 -10 22 -51 64 20 -19 -25 35 65 -42 -58 -70 -64 38 -33 44 -55 -74 -44 31 32 6 50 57 -34 73 -28 -28 -47 -23