% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 127 -21 -12 49 28 14 36 53 88 58 155 95 211 195 327 464 337 375 325 247 281 395 249 260 327 335 398 243 353 300 221 268 254 270 330 261 292 256 207 237 152 155 168 193 142 184 131 148 160 105 147 126 94 103 86 98 73 63 83 58 56 57 25 46 -13 34 10 32 42 22 20 34 51 24 -25 -38 -17 -5 -37 13 -29 30 29 -25 -21 -12 -40 -30 14 -20 -4 9 -40 -43 -24 -32 -34 -26 46 -12 -12 23 23 -35 -27 47 5 12 28 24 -10 -33 -13 -28 24 18 -3 -14 22 -17 37 17 43 -35 -32 -19 -12 -29