% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 153 177 97 77 163 170 100 164 229 187 311 605 664 478 340 452 245 487 358 419 390 284 330 269 302 205 211 188 218 170 196 161 99 123 145 146 89 114 87 57 84 60 86 69 80 68 86 61 48 63 26 -22 36 36 62 -13 60 23 64 49 59 74 38 25 62 59 46 -32 -7 21 -40 17 -21 31 42 -32 21 -36 36 40 -30 -19 -19 -26 -22 18 -32 -45 -35 -27 -27 24 -31 9 19 -35 -13 -30 33 17 -23 -45 -48 6 -40 23 9 -27 19 -34 17 6 -14 -18 -33 -23 35 35 27 -22 -18 15 -31 36 32 38 48 37