% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 213 146 155 133 110 129 161 246 548 525 607 277 251 395 213 230 163 267 282 235 164 170 226 293 156 246 275 218 207 217 225 173 133 181 117 207 165 137 141 67 85 86 85 92 94 86 72 78 90 81 76 85 88 72 88 50 92 29 29 27 27 4 21 -33 48 45 -22 39 37 24 81 21 -1 46 45 48 57 43 52 47 30 63 42 48 45 88 53 53 26 -7 64 -15 -28 -14 53 -31 -39 37 28 27 19 22 20 33 8 32 -17 -11 26 24 -21 -22 -17 20 -17 -17 -5 -28 -36 -17 24 -32 -18 -26 -8 -22 12 13