% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 80 159 160 142 122 96 87 122 122 129 330 505 777 918 1689 973 1075 839 950 619 831 889 476 481 350 455 465 273 476 307 294 383 207 222 195 254 168 262 157 196 143 157 165 203 104 116 90 99 77 72 80 96 109 85 74 82 54 69 95 49 64 77 54 74 75 45 11 79 54 53 45 19 44 58 86 17 -6 -22 42 34 -4 -28 75 15 51 -17 15 52 34 61 28 -25 2 -2 51 14 40 34 -36 22 25 42 -28 42 46 -17 -22 -24 19 -13 12 -38 40 47 -29 34 -32 -25 -38 -28 16 -43 -11 -34 -27 11 -37 -25