% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 197 152 108 111 116 86 62 82 134 134 193 389 309 259 254 154 156 148 119 129 149 121 92 116 67 85 72 44 53 57 58 58 45 49 34 44 45 40 10 51 44 40 49 38 55 70 47 39 49 43 59 37 15 23 28 31 23 33 14 15 18 16 31 11 31 12 33 28 24 32 -18 4 -9 -26 22 14 19 -9 28 17 20 -17 -8 -10 -12 22 -11 33 10 19 -13 21 15 7 8 16 -21 -9 -24 24 33 -20 -20 -15 23 -6 -20 22 13 -21 -21 -13 -21 29 17 33 27 -20 -26 -25 21 -21 -10 5 -17 -10 30 -11