% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 108 75 73 78 68 -12 40 21 48 56 66 40 113 184 237 153 245 243 407 446 421 435 238 266 187 246 247 273 207 272 362 322 325 330 217 226 223 191 137 127 189 116 117 121 140 168 90 137 141 109 89 82 83 34 36 59 61 67 80 83 72 56 60 52 39 51 62 45 73 42 13 34 -22 32 28 22 -24 26 18 -15 13 -19 -20 16 -15 -37 -33 -6 -18 -36 -35 -36 -30 9 -15 -27 -25 -21 30 -32 6 -29 -25 19 -29 29 -22 -17 -23 -19 36 -26 18 13 13 -23 -27 -21 21 21 37 31 20 22 7 22 -29 27