% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 99 87 87 82 109 73 95 102 210 243 211 344 266 310 224 229 428 224 228 209 274 184 104 138 188 108 167 178 102 125 108 83 135 110 109 65 58 70 99 75 58 71 56 54 37 64 24 14 39 45 36 20 43 40 56 17 27 -19 -13 25 7 31 27 18 24 35 -6 23 16 -10 -16 -8 -3 -29 -16 -19 -20 28 22 22 9 -17 -20 -20 25 -11 23 17 18 -22 -18 -22 -12 -10 -16 -26 24 33 1 13 -16 -24 20 -23 -18 7 -2 -13 11 23 12 -21 33 -23 26 -20 -6 -29 26 -19 -15 30 -16 13 -16 -15 -17 26