% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 297 214 137 89 120 67 101 84 234 362 182 239 211 326 307 238 172 326 290 273 229 459 375 232 260 419 360 174 134 140 124 97 141 162 196 85 111 106 66 135 65 71 44 66 51 77 75 100 48 53 55 76 47 36 52 37 31 78 60 67 85 104 64 28 67 35 46 71 76 62 31 35 60 20 39 49 23 21 -25 30 48 30 -5 25 18 44 35 23 25 -1 -40 14 40 27 -14 58 20 61 51 -38 40 33 43 -29 -22 -15 36 17 -18 -17 -23 18 -23 22 6 42 -30 -28 8 -33 -27 -20 23 -34 -43 -8 -27 -30