% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 103 82 31 31 17 69 27 45 105 170 239 192 285 280 134 290 208 221 260 315 199 244 196 192 170 175 136 147 103 132 78 131 101 105 121 68 102 77 95 31 77 80 65 64 52 55 13 -41 71 29 16 -40 -31 20 40 -16 29 56 21 86 52 77 89 77 41 114 144 105 146 133 121 90 99 79 98 97 81 88 101 90 112 66 78 91 30 -12 46 44 3 66 38 24 -27 43 29 62 30 40 32 24 -18 -31 28 -15 20 -37 50 11 -34 37 41 -38 22 -27 7 -18 29 -46 36 31 -31 -40 -32 -10 47 -38 -37 -32