% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 111 109 93 105 109 73 84 74 101 163 103 161 161 131 181 268 239 216 425 586 1061 717 475 364 345 306 249 312 148 229 131 188 129 231 183 162 142 132 90 93 87 65 90 85 83 42 53 50 82 5 37 43 47 48 33 19 37 20 44 34 40 34 37 41 27 40 32 16 18 47 21 9 25 -22 23 19 26 46 41 35 29 27 31 27 9 32 43 -6 -24 7 35 20 31 26 12 -21 24 14 36 34 -16 9 -28 -17 -29 -18 9 31 -25 17 -13 -3 0 -18 -14 30 -20 13 -26 -18 -6 25 -21 25 17 -11 -5 16