% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 93 93 86 150 100 42 19 -16 -17 56 67 117 382 722 537 599 368 702 425 375 361 305 433 474 388 336 204 421 371 338 278 328 233 261 219 172 224 145 197 214 280 156 101 146 146 146 140 105 54 92 44 119 104 148 106 129 109 71 87 131 123 95 77 117 91 77 74 85 81 98 96 83 81 58 63 38 70 67 86 17 46 45 29 25 14 24 31 52 39 59 37 20 26 -12 36 14 -13 35 46 -16 32 15 36 16 30 49 21 -13 11 -4 -11 -23 -11 -17 8 12 -13 -35 -28 -21 14 -33 -24 -20 -19 -25 11 -23