% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 90 137 107 87 99 109 57 63 106 187 164 188 175 192 135 166 174 195 153 153 133 122 147 119 115 146 101 40 49 89 112 54 107 105 84 103 55 65 64 64 51 65 96 93 44 -10 82 49 63 77 81 56 91 88 126 63 60 104 92 38 63 108 67 80 70 70 81 49 125 76 33 59 86 80 48 68 81 28 43 103 40 34 -17 48 52 -30 17 27 -32 -11 21 -35 -45 -25 43 -19 10 31 -19 43 35 -31 -29 -15 24 26 -33 32 -27 -36 41 -24 -25 -32 16 18 -22 -12 44 43 -36 12 26 -14 81 -18 -42 -43