% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 136 101 76 62 68 80 75 80 150 314 219 161 171 131 130 162 123 172 181 141 175 219 205 187 243 185 222 143 180 191 182 166 159 142 171 91 162 166 124 117 84 88 124 150 110 60 96 85 64 62 61 111 61 66 101 83 38 59 51 62 54 37 55 59 34 14 43 9 25 7 13 28 40 9 -19 18 15 27 -24 33 22 40 41 -22 17 -32 -26 -10 14 28 29 -13 -23 -16 -29 -32 -33 28 -34 -34 -10 16 -13 15 -23 -32 21 -14 25 -14 51 -37 20 -7 22 1 16 -24 28 4 -20 -14 41 28 -29 42 26 5