% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 80 56 57 48 29 21 -17 38 -13 68 75 82 85 156 170 156 163 175 174 180 115 81 114 52 98 109 133 61 110 124 80 102 118 133 258 282 509 367 358 329 245 384 315 240 268 173 150 297 198 140 103 147 132 121 203 132 112 172 142 120 117 89 71 105 85 100 105 120 106 97 73 66 78 66 118 71 82 65 62 83 55 80 23 41 65 60 66 87 48 46 60 42 27 41 26 28 58 64 27 23 48 -32 -10 21 -1 37 -12 -21 -42 -17 -18 -35 -16 47 -18 19 -28 -42 -31 -19 -49 25 32 -14 -32 -26 -39 -36