% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 119 100 56 74 46 33 48 61 89 183 181 399 429 291 243 154 127 124 93 102 88 81 79 93 100 74 83 68 70 48 39 56 45 35 38 38 44 36 30 18 19 -7 17 -5 16 14 -8 -11 25 -11 26 18 30 28 24 -16 20 28 19 16 16 -6 14 -13 6 28 -13 22 -10 -18 21 24 13 -7 -5 14 26 10 18 -8 -16 10 -6 21 35 10 -21 21 22 -15 12 -16 15 -7 17 29 20 -18 -6 27 26 33 1 -14 6 -22 9 -9 -13 -23 -8 -18 20 14 -9 -18 -17 -8 -14 -13 14 -4 -4 5 -22 -13 -15 31