% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 72 66 55 80 63 24 71 43 83 124 104 166 232 334 384 400 411 398 361 311 178 195 145 116 125 189 69 66 104 69 66 85 37 62 24 16 -36 9 29 19 -34 54 26 41 84 58 6 65 100 69 76 55 99 67 53 88 149 124 126 90 84 100 89 77 52 86 61 58 56 67 67 76 57 52 30 20 55 62 55 34 70 27 27 30 24 44 -26 43 9 43 -15 17 17 -20 30 -13 -17 -13 12 21 -10 24 -15 -20 -16 -18 32 12 11 -30 46 -22 26 16 -9 17 -23 24 16 9 -7 38 -33 -9 -13 -10 -6 -21