% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 192 129 155 88 74 103 64 97 151 113 125 121 310 582 396 407 307 401 505 526 378 543 261 282 428 310 377 336 340 246 136 210 178 202 167 131 100 192 159 229 129 87 134 126 93 106 105 93 77 78 60 51 69 56 69 75 52 51 43 39 73 -21 70 43 50 18 38 49 -21 -46 -40 25 -3 -36 27 -16 35 18 -14 -21 -15 -18 43 -46 -43 57 -16 10 -32 -32 47 -45 -33 51 -42 -11 -36 -35 -25 -38 29 33 -39 34 -34 -21 47 -26 -17 32 -21 23 -18 -11 20 -19 -38 26 20 -17 24 -37 -23 44 -14 33 37 25