% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 155 156 204 119 77 62 -5 -34 105 123 296 665 926 1330 1147 1038 575 415 557 277 404 264 279 315 333 283 320 170 275 163 214 164 127 84 73 87 122 93 54 83 94 61 24 37 -16 45 46 -24 -28 -14 -22 41 30 58 73 41 37 92 97 70 90 78 95 109 144 125 106 134 104 94 116 107 87 100 62 28 85 81 64 44 20 67 46 43 -16 69 26 34 38 -30 16 42 -6 26 43 27 35 49 30 29 30 -22 -4 -20 44 25 4 22 -26 -32 35 -16 26 32 -33 -6 9 -38 -6 -27 -45 -35 -17 -19 -21 -19 -39 -11