% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 158 61 55 28 37 12 66 96 68 128 109 120 308 419 535 274 184 183 126 174 93 40 18 79 74 89 83 102 114 97 69 95 70 68 47 56 44 10 46 45 -5 -26 27 3 -29 -31 -20 -17 -13 -21 -21 -41 -30 -34 -11 -41 -39 -37 -44 -27 -36 -24 -38 -37 -39 -42 -40 -39 -39 -42 -33 -29 -28 -41 -27 -39 -11 -40 -47 -32 -30 -33 -18 -34 -37 -32 -12 -30 -26 -38 22 -18 -17 -37 -37 -20 -9 32 21 -28 -20 -27 -36 -14 -22 -14 -13 24 13 19 21 29 34 -30 -11 -21 31 -26 -12 12 -13 21 -3 -19 -4 22 47 18