% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 246 204 211 173 192 163 143 125 186 229 248 283 314 260 294 116 216 222 151 158 150 99 206 118 127 199 144 120 108 79 119 112 136 42 74 107 97 111 136 95 90 76 88 86 134 25 76 87 56 62 39 58 42 11 -20 43 57 27 49 22 -11 75 27 53 10 -40 27 -35 -27 -36 -20 49 -49 -38 -13 40 -11 -29 -47 -43 -52 -33 -33 -41 -35 -36 -17 18 -36 -27 -39 48 -26 -11 39 -22 -42 -12 -22 10 47 -35 35 6 -36 19 -28 34 -4 6 18 27 -40 19 81 38 -37 -25 -29 -30 53 -32 -22 23 -30 -33 -12 -34