% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 153 220 316 200 183 187 71 112 115 213 509 541 1376 1332 1491 2011 1090 730 984 975 967 703 726 767 561 519 653 494 528 397 338 401 371 351 284 284 315 275 301 228 187 340 237 187 254 154 170 239 150 150 141 162 160 90 204 114 137 137 87 109 121 70 110 100 85 100 65 62 72 42 58 35 66 69 77 68 68 36 -7 33 25 25 -18 -27 -16 32 48 -11 -18 -23 -12 23 -31 16 38 30 35 -12 40 22 25 33 -14 53 33 -11 26 -21 -18 -25 -3 -19 19 -17 24 -40 -25 -36 -28 -35 -8 -20 20 -27 -44 27 5 22