% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 234 163 135 132 103 72 95 72 75 140 162 199 245 360 478 536 600 482 385 438 310 468 261 241 242 266 352 170 190 131 170 138 175 126 118 111 116 181 118 92 97 95 87 84 58 83 39 75 78 45 50 49 42 44 49 45 35 14 43 -15 53 37 49 48 46 25 33 19 28 25 30 24 27 52 54 47 33 4 -13 27 -12 -16 14 -27 12 -21 20 26 15 33 -22 -30 32 17 34 -30 -25 18 23 24 -11 -34 -15 -34 17 -16 37 -13 12 10 28 15 -24 -28 -22 -19 -15 45 23 -12 -19 -30 31 9 -15 21 34 -30