% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 94 55 87 36 -8 -12 -23 31 -9 38 37 130 148 212 460 525 626 479 439 258 218 266 146 96 74 87 61 65 82 66 61 47 88 -23 85 84 97 127 57 118 147 52 121 108 94 94 92 129 182 93 160 61 84 101 86 67 69 96 132 78 110 111 69 71 92 92 60 46 75 58 57 69 31 24 68 47 37 52 38 45 29 -5 24 57 29 29 39 36 -28 42 32 -14 21 -17 56 14 6 -14 42 -29 28 -11 -10 25 -8 -8 11 45 -29 17 -13 -25 -24 18 -24 -29 -28 -14 25 -13 23 13 11 -21 13 33 -15 30