% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 126 244 253 151 126 207 162 136 112 109 198 526 1192 2406 1345 833 1015 672 379 496 431 348 348 306 311 496 330 394 359 223 257 291 171 137 108 121 122 61 128 82 81 95 56 -9 61 47 34 44 52 28 51 48 46 38 54 27 29 -24 -25 39 -21 9 -26 -18 -24 -24 -25 -26 -32 -8 -29 -17 -16 -30 -29 8 -22 -27 -14 11 -10 -26 -24 -23 -34 -23 -29 -23 -14 -30 -14 -1 12 -25 -31 -16 -9 -21 -15 16 -30 25 22 -31 -23 -16 -13 34 -14 31 -7 26 6 19 -32 -13 -8 -21 20 -12 -26 15 33 -18 17 -30 25 22