% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 230 87 64 67 95 66 69 152 126 147 192 169 252 403 457 261 132 257 247 280 289 319 551 294 410 348 164 212 202 176 141 194 151 81 93 94 88 99 47 35 48 57 56 29 43 51 48 61 60 30 54 16 82 73 40 77 66 69 167 115 110 66 95 71 45 44 60 45 34 44 29 26 39 37 44 67 37 55 47 44 42 29 37 55 39 47 21 52 53 17 53 34 38 46 -17 36 24 24 -13 21 24 25 -18 22 26 15 9 14 -25 -13 -23 25 -20 8 -26 -15 33 8 -24 -21 -9 -11 -15 18 -13 18 -13 -24