% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 82 83 110 49 88 82 78 141 112 112 71 85 116 248 198 634 497 368 467 485 525 603 468 357 335 284 369 253 272 175 271 178 225 233 212 164 199 202 127 118 160 165 95 98 118 83 118 110 120 107 70 91 73 34 48 57 54 49 37 31 62 26 33 41 38 13 26 34 14 -10 12 18 37 20 -18 -34 -11 -8 16 -20 -33 -19 -11 -37 -32 9 -22 -31 0 26 9 -11 -30 -38 -23 -30 -17 -28 6 -15 -21 -29 -22 -21 -26 -4 9 -25 -13 -19 19 38 19 9 -7 19 -26 -10 -2 8 25 -9 42 39 17 -13 14 15