% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 111 105 115 112 76 115 92 108 190 237 390 539 397 215 294 197 184 262 176 170 188 144 100 105 91 124 104 79 81 50 55 61 68 51 33 38 47 46 26 15 -12 38 60 37 14 17 34 23 44 25 10 11 7 -25 39 6 -25 25 13 -25 -7 24 16 42 -27 -39 12 22 -34 -26 -34 -8 -11 8 -7 -14 -13 10 -13 -25 -6 31 39 -24 -20 -16 20 -28 40 -21 -12 -25 -22 21 -5 -20 26 36 25 2 -6 17 -28 26 22 31 -8 11 8 34 -21 -29 -20 -18 -8 -5 -27 -19 -30 -21 -22 11 22 25 6 -34 13 -27