% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 192 162 102 118 102 119 114 141 122 158 192 169 195 144 160 101 109 172 112 104 85 108 200 138 101 93 102 94 63 81 68 65 71 72 70 66 41 54 56 54 49 22 34 47 60 46 38 21 44 45 36 24 30 27 39 52 54 45 38 45 11 29 31 37 34 31 18 13 -11 45 23 49 -20 13 58 33 -18 17 16 19 -23 26 20 24 28 -18 6 -30 20 35 19 35 -27 19 17 -28 11 -25 -22 14 15 -22 9 42 -29 18 -16 -20 -7 9 -21 -30 9 22 52 -13 16 23 -10 -15 -25 -14 28 -21 15 24 13 13