% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 171 75 94 75 74 36 33 39 25 67 61 64 98 107 97 135 202 384 744 587 493 396 284 224 324 164 156 164 92 100 85 83 101 37 90 37 35 -8 58 49 57 49 41 33 80 61 64 38 70 50 89 81 52 67 67 66 62 46 58 55 90 54 67 73 35 61 70 47 66 58 54 40 29 53 41 53 56 57 38 43 41 49 -23 39 42 28 42 22 -9 29 -8 44 -5 -22 -6 14 21 -19 30 -7 12 19 -7 -29 12 -19 -25 -8 -8 22 -12 25 24 18 10 -22 -16 14 -21 33 32 -32 -18 -23 24 -9 -19 -18