% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 164 134 137 70 81 75 78 127 193 210 255 344 276 313 279 89 133 173 145 129 160 131 118 161 124 100 100 87 87 80 64 92 49 74 76 43 38 56 43 45 37 8 45 32 38 -9 36 49 32 14 52 15 45 -34 10 20 -39 -39 23 8 -33 -31 -28 -35 19 -22 -37 -37 -20 -41 -43 -21 -38 -37 -32 -37 -8 -41 -44 -34 -28 -25 -20 -40 -39 -27 -31 -7 -25 -28 -27 -31 -9 -13 -7 -30 -20 -34 -4 -15 39 -21 -10 -17 -27 -18 -29 -24 -30 15 41 -16 19 36 22 -30 -18 -11 16 22 -17 -22 20 19 23 31 -25 41