% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 300 136 107 74 85 127 82 101 132 187 523 330 355 219 225 212 191 239 285 164 522 269 335 224 181 167 117 103 120 123 115 105 61 78 74 115 78 91 69 47 70 16 60 79 85 19 35 -38 -20 64 75 43 48 62 80 61 -36 52 38 38 89 52 15 -22 43 46 95 122 127 82 72 74 55 41 69 67 100 37 65 50 43 -15 60 32 31 -36 -27 46 42 30 -39 72 39 24 67 -13 -14 -27 -35 -28 -12 7 -33 39 23 50 31 -38 -13 22 -18 63 -41 -20 -11 -34 -16 16 -29 32 -36 -48 -19 21 69 -4 -21 -27