% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 55 74 57 53 47 57 65 54 80 103 74 123 141 160 104 153 174 162 168 90 114 120 81 81 55 34 74 -23 54 36 27 -19 -34 -11 12 40 19 40 27 -30 -27 25 20 -37 17 39 5 46 -45 14 -18 -18 -24 38 54 35 6 74 58 39 42 52 15 27 23 47 -23 52 65 48 52 58 26 21 38 35 41 21 23 -21 -6 33 -25 21 3 -31 -27 23 -38 -19 -38 37 24 -40 -23 16 7 -25 -23 42 -18 12 31 48 -33 -20 30 -30 37 -27 -36 -20 -38 10 -29 -26 -21 27 19 -18 -14 15 33 -33 8 18 -10 18