% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 159 140 102 119 116 106 120 145 196 280 432 439 423 391 355 520 393 401 251 279 310 305 360 230 116 152 137 107 139 142 92 86 95 71 72 71 85 93 50 53 52 25 16 63 68 47 33 9 28 -16 26 42 26 27 36 35 20 -19 -21 22 17 -28 -27 42 24 -29 -6 31 -34 16 -13 -18 -31 39 -28 -17 -10 -22 34 10 14 14 12 -17 -20 2 -20 -24 -23 14 -30 35 40 -25 -13 41 44 -24 27 24 -36 -18 -24 -23 -21 -39 31 33 -16 -30 -23 -25 12 36 -21 -17 37 -27 -32 27 33 -24 25 14 10 -15 -5 6