% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 146 270 231 194 71 123 136 135 189 75 105 236 610 747 2089 1731 1404 859 840 972 722 1404 782 547 462 473 424 502 405 464 345 369 526 414 322 267 212 288 253 243 233 155 166 167 199 146 170 153 178 112 104 102 107 102 86 77 100 68 76 71 76 64 94 45 57 51 59 68 49 62 42 30 71 74 54 -30 60 46 38 59 17 29 18 19 51 -14 -41 36 25 36 23 23 -24 -17 -29 39 43 30 -27 24 24 -33 35 -14 -16 46 37 36 -21 16 -23 -16 -38 36 23 -22 -35 -25 -16 34 -39 -48 23 24 -32 -18 -35 -25