% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 240 115 110 95 100 98 115 103 115 124 86 140 132 336 468 412 653 591 506 363 605 467 521 489 368 500 325 367 326 503 465 216 270 391 233 185 296 165 158 131 182 130 110 119 140 109 113 120 93 89 96 80 60 99 73 68 61 80 62 61 -6 53 74 57 32 52 19 -15 53 21 -13 -21 -8 -26 41 15 17 -26 28 32 -44 -44 25 25 -12 18 22 14 -30 63 63 -14 50 21 -42 -36 -6 14 -29 -38 22 -34 -35 34 9 8 19 29 -16 22 44 34 -19 -31 34 -43 -32 -31 -43 -37 61 7 -11 31 -10 31 40 -36