% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 40 50 66 45 51 -16 25 112 -12 69 92 131 179 296 286 355 447 235 365 397 317 326 284 184 152 141 71 103 84 96 -14 33 32 46 38 108 86 108 124 119 149 137 195 163 217 194 191 180 173 260 87 174 163 146 124 99 132 105 105 126 99 137 132 99 95 86 103 106 92 117 46 68 69 67 45 82 70 46 83 40 67 62 56 37 50 38 -24 60 51 51 19 47 46 23 34 -13 34 -4 -7 45 31 -21 24 -29 33 -30 -19 22 -35 9 37 6 -19 -15 -36 18 -40 -9 -9 28 -5 23 7 7 -17 -36 21 -33