% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 54 75 63 54 60 60 117 96 114 151 72 54 79 143 234 357 330 705 542 585 368 387 316 391 268 283 234 258 251 301 297 216 232 197 178 207 127 212 186 225 223 180 102 129 161 135 138 95 147 74 121 88 98 63 85 97 80 65 45 57 82 51 56 45 47 54 67 30 35 34 22 32 14 28 26 34 36 36 -12 45 -7 22 6 -22 -3 -19 17 23 -22 -18 -12 -16 -9 -15 28 23 13 24 -25 -22 -16 12 -19 -20 -5 -19 -7 -10 -17 23 -18 15 -7 4 -5 30 -3 17 -6 29 -9 -19 -14 19 -21 5 13 20