% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 78 76 127 120 96 71 95 108 201 421 310 204 166 185 275 308 573 256 463 527 461 627 419 321 503 484 313 436 217 270 253 233 167 161 163 227 173 132 83 106 113 83 90 87 80 59 88 56 67 33 65 28 31 40 57 41 44 36 25 30 59 -9 34 49 25 32 40 43 13 33 21 31 19 22 -19 30 11 -34 -19 -21 29 22 20 -29 12 -17 4 -20 -24 12 13 32 16 24 22 19 -19 -18 5 27 -18 24 6 5 -19 11 -3 -24 17 42 -21 10 2 -24 -14 8 -27 -16 12 30 -18 14 -16 22 25 19 17 18