% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 834 517 460 380 400 340 360 401 356 320 333 614 371 345 292 193 375 294 259 373 151 321 225 314 196 208 255 234 303 280 204 307 207 96 -23 167 233 173 262 180 175 127 -50 76 175 66 217 247 72 153 -25 204 206 197 213 -35 142 85 128 43 101 69 185 88 106 28 -52 -56 108 -77 124 -86 -106 -100 -58 -57 256 -45 -73 -42 -112 19 -98 98 85 45 -71 -58 -66 -91 -108 98 124 -63 155 -87 -58 -88 -93 -92 -105 107 -63 -34 68 -60 -43 -75 -57 -52 -16 138 -98 -62 217 -92 32 13 -130 -76 -59 -127 166 156 21 49 -73 -82