% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 139 100 91 60 65 74 62 95 146 85 202 192 148 234 435 368 622 613 568 306 457 292 398 563 548 220 368 307 180 242 343 245 274 423 180 180 171 161 137 143 135 114 99 99 92 98 59 66 65 59 77 90 69 88 39 73 -8 31 46 15 -25 42 -14 -26 20 -21 21 -14 -25 -33 -28 -34 -18 -31 0 26 -36 -40 -33 14 -17 -10 -19 -38 -33 -32 42 -26 -40 -29 -21 -8 -20 -9 -34 -27 -32 -31 37 -17 -16 -22 -27 -28 -30 -8 26 -26 13 25 34 -25 -29 -25 -2 2 30 18 22 24 36 50 -20 -16 -33 -14 -8 34