% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 152 113 90 81 69 58 42 105 116 136 121 185 203 359 257 502 449 371 463 311 233 163 171 172 175 46 103 138 104 63 112 144 118 96 144 100 137 172 106 108 142 118 174 172 180 150 155 135 215 200 164 164 145 170 114 146 158 104 120 107 114 119 103 70 137 85 70 97 76 72 66 34 59 63 75 64 80 73 54 71 103 52 61 60 47 17 44 -21 70 56 19 28 35 48 33 44 22 18 -19 34 -12 29 20 -18 -31 -5 -27 -28 32 15 -13 -29 -28 6 11 30 8 -12 27 -29 -12 -13 -12 26 -31 7 -11 2