% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 83 57 66 43 37 12 52 408 308 221 226 233 291 185 194 208 223 151 179 109 135 111 175 102 123 158 119 80 -28 118 73 101 104 42 42 53 69 48 46 3 31 -29 59 44 37 67 27 -14 27 -16 -39 -17 -5 -37 -42 -52 -40 14 -34 -37 18 30 -10 -33 -36 16 69 3 56 54 49 32 51 53 22 71 -38 5 33 65 59 36 36 10 53 43 -7 -33 55 18 -22 -31 15 30 20 -40 -38 -25 34 -29 19 40 -34 -18 -27 -8 40 11 -17 29 -25 -19 -35 -30 27 -13 24 51 -34 11 5 -41 23 1 50 -12 6 21