% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 64 Frequency Bands are 0.01562500 Hz wide(first frequency band is centered at 0.00830078) 87 52 62 67 120 135 321 385 333 708 1067 446 412 337 295 300 264 284 327 252 274 261 234 233 212 188 197 189 167 158 157 155 124 119 171 112 119 127 99 86 74 76 70 64 50 57 42 51 52 38 20 -11 21 -25 38 -27 19 -25 -12 -19 -31 25 -50 -18