% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 134 142 256 135 90 48 64 66 53 90 93 152 150 222 346 630 946 960 1053 1052 943 1305 781 766 441 494 378 511 529 449 397 484 460 395 361 267 258 321 162 252 168 155 124 144 201 181 163 162 120 167 97 111 98 87 122 101 77 97 87 41 67 28 29 68 60 70 59 69 -13 -21 34 64 -13 40 36 25 17 -20 26 -13 47 57 17 49 16 35 -24 -33 24 -40 57 37 33 3 -19 34 17 16 12 15 17 25 -16 -21 15 -28 -16 22 -28 -16 29 -35 23 16 -3 -27 40 -24 -22 -5 -7 6 6 -39 -40 28 51 24