% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 197 181 177 176 109 136 140 241 737 463 424 400 295 376 139 284 144 258 306 264 212 157 140 130 169 188 134 184 152 142 202 163 147 153 175 129 92 142 149 55 102 70 119 92 111 121 107 90 101 82 95 152 169 70 104 86 96 115 57 60 47 61 88 88 66 67 85 43 44 39 48 20 34 38 58 68 -40 -21 -10 69 -8 69 28 -34 -31 13 39 35 -24 -28 29 -16 38 -20 27 -15 -30 -29 15 -25 -34 -28 21 -31 -33 42 -7 -35 -34 29 49 -32 27 47 30 32 -43 -4 -25 -11 -19 -8 25 25 -20 45 35 -10