% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 269 97 104 101 90 81 81 61 83 176 145 144 286 481 519 499 478 392 286 330 350 396 216 257 160 193 188 116 158 113 115 159 134 96 94 118 85 97 79 72 73 65 49 47 44 42 54 36 37 51 67 66 80 42 57 40 43 52 47 77 70 45 37 30 39 35 33 29 28 46 34 29 8 33 30 10 24 28 6 24 20 28 33 7 7 19 23 -12 19 -24 25 17 16 2 -9 17 -14 -19 8 -12 -14 19 -18 24 -9 5 -11 20 -14 -13 12 16 10 13 -10 -3 -16 -6 -22 25 7 19 -12 -14 15 -26 13 21