% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 119 73 124 44 29 -10 57 54 43 69 57 97 88 284 240 357 505 340 393 233 211 193 161 138 112 74 88 60 59 52 -34 28 25 8 58 57 55 8 100 83 84 113 149 109 162 136 59 171 107 77 130 113 68 131 98 77 85 87 70 55 81 110 78 78 68 75 74 60 80 54 31 58 79 46 40 21 40 64 45 32 36 17 77 18 34 33 48 17 27 11 4 -20 14 -11 -3 -9 14 -42 -3 -23 28 -3 31 -21 13 15 17 -21 34 -22 17 12 -16 19 26 15 9 -26 -31 -16 21 39 -13 -4 -5 22 -23 -28