% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 209 120 107 64 61 71 107 75 91 108 88 114 182 230 260 318 388 378 396 280 323 218 191 116 97 128 84 84 118 108 56 120 85 111 100 107 66 72 43 101 96 74 76 62 43 42 30 22 71 70 40 38 32 33 39 40 49 24 10 -15 46 29 -10 39 26 36 -6 -13 -30 -12 20 49 57 -16 25 8 -17 39 -26 -14 8 6 -22 -23 -34 -23 -36 -16 -17 31 25 43 15 46 -22 33 40 -10 -30 7 12 22 -23 16 -14 33 -18 -33 -26 -34 -27 -9 23 -24 -16 -37 -28 -17 -31 -17 24 41 34 25 26 24 14 28