% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 131 197 185 141 160 115 88 68 134 355 373 784 1230 1129 1156 977 803 719 492 442 398 324 223 358 366 459 217 214 168 198 214 147 135 151 133 106 88 105 107 89 78 100 94 90 54 85 92 71 60 101 64 74 37 59 58 55 42 37 37 62 39 55 -10 46 27 24 -22 24 25 26 34 -20 31 26 44 40 25 28 30 23 53 23 9 13 20 -20 27 -20 -12 -16 21 28 31 -26 -25 -24 29 -22 37 24 -17 12 48 -3 -9 -24 9 39 24 16 -29 21 -28 -29 -25 -25 41 22 30 24 -36 -28 -33 5 -31 8 -9 -20