% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 111 69 50 64 84 32 81 113 165 151 184 101 216 117 164 167 140 132 102 258 196 313 367 387 345 284 286 395 268 160 191 143 194 207 120 77 172 149 124 92 94 106 102 119 113 149 89 56 88 83 82 145 60 50 108 70 37 74 82 75 51 78 42 51 80 19 49 30 -19 52 70 62 -15 26 3 27 64 58 65 29 -65 -51 31 14 6 -14 -38 -7 -37 27 32 10 40 15 -61 52 -36 -28 -63 -32 42 9 13 -46 38 43 -40 12 25 60 -57 -8 34 -33 -19 29 -21 44 22 40 42 -25 -46 -49 -8 59 50 -37