% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 102 247 140 116 115 118 74 86 77 112 104 200 268 206 649 963 1293 1589 866 633 521 561 492 333 453 456 438 445 256 314 187 288 260 290 268 160 132 252 143 78 101 71 87 62 74 57 51 45 68 59 53 41 73 51 69 35 31 -27 13 35 15 -32 -42 -34 -31 -11 -35 -35 -32 -25 -30 -35 -32 -47 -49 -43 -42 -38 -13 -42 -18 -29 -26 -38 -27 -16 -37 -22 -49 -19 -10 -39 -22 28 -19 -24 -35 35 -34 -27 31 19 -15 24 -38 -25 -20 -15 12 -30 -41 -37 -22 -32 39 -1 36 62 30 -32 28 -20 -25 25 36 -34 22 23