% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 209 122 139 90 137 119 126 153 115 129 119 238 464 700 713 798 898 550 413 243 235 276 237 237 243 240 115 201 192 244 121 181 138 145 173 97 132 78 142 76 125 122 145 156 152 151 97 102 76 113 75 89 73 78 71 75 83 61 72 76 76 58 52 51 37 84 57 69 53 41 58 30 33 46 50 41 48 36 17 28 46 36 20 29 46 23 -27 29 -11 -24 33 34 39 28 30 2 -10 46 -9 -21 -22 15 14 22 -15 -15 25 11 -9 -6 19 17 27 25 26 19 -19 -15 -19 -17 -25 -5 -22 -23 -3 -26 -13 -22