% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 73 55 100 102 52 43 79 91 34 135 126 136 230 334 259 471 613 300 190 189 158 129 114 188 85 30 85 66 110 61 69 -4 -31 7 -39 -21 -17 -8 39 35 21 61 -33 30 -6 -25 -15 -36 -35 -30 -22 -48 -46 -40 -45 -45 -31 -29 -38 -21 -15 -28 -43 -44 -37 -42 -43 -41 -44 -36 -49 -19 -33 36 -25 -31 -31 -39 -20 -38 -30 -44 -30 -22 -44 -13 -24 -36 -37 20 -23 -33 -33 -40 16 -23 -39 17 7 -18 -36 -27 -20 -26 24 -23 5 17 -26 56 -13 21 -13 -14 -11 -26 54 14 23 18 39 27 26 -24 -31 25 -20 8