% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 215 109 185 119 78 86 104 73 96 74 102 122 242 216 441 348 641 655 633 635 496 409 409 425 298 531 303 261 362 366 224 210 247 228 193 119 229 194 166 133 135 111 120 105 91 132 81 96 58 98 68 17 57 68 57 37 52 48 43 62 40 -12 36 28 11 51 21 46 50 22 51 46 38 40 -14 23 46 45 43 -18 17 -12 -4 20 3 -22 18 -20 -21 16 -16 37 32 61 -13 -37 -15 34 45 -21 -12 -25 29 25 25 20 -16 23 -14 -26 -30 -26 29 -26 -43 20 30 25 38 -10 -25 -26 19 28 -31 15 -38 -31