% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 156 48 58 -17 2 -21 25 71 142 125 142 141 257 464 455 378 317 206 116 119 120 41 56 97 83 44 42 28 77 8 18 -37 -44 -36 -43 -42 -44 -44 -37 -45 -38 -21 -39 -39 -31 -27 -33 -34 -35 17 -14 6 -38 -16 47 30 26 18 -22 7 -24 -43 17 18 -35 -9 24 19 40 37 24 36 36 68 89 11 40 34 51 50 69 68 29 24 60 45 15 46 -21 51 20 44 30 -7 23 -17 14 -12 36 7 -8 30 -28 13 -21 -35 23 27 -37 21 25 -30 -28 33 -21 19 20 24 36 -7 15 19 21 11 -33 -26 -24 -24