% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 156 124 92 119 88 122 58 146 205 186 130 112 159 137 164 310 348 313 537 443 533 577 328 427 312 301 283 262 278 346 208 209 233 321 149 174 170 207 225 135 127 128 74 122 113 127 89 69 88 111 64 80 46 98 73 68 69 45 48 58 59 57 34 21 31 56 20 62 53 28 54 -19 -30 50 33 23 11 23 11 1 54 -17 -31 34 29 39 24 -23 -24 -31 41 -14 -22 29 -41 -7 -11 -15 -38 10 12 -15 -22 -28 -29 -30 -26 33 18 -14 21 19 -8 0 -6 27 26 -41 -40 -19 -22 31 34 5 25 36 -14 48