% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 635 196 248 253 253 171 193 145 113 107 157 136 153 115 173 164 150 123 122 105 100 90 107 114 108 95 94 98 77 83 79 100 84 82 80 85 94 95 71 70 88 42 68 87 71 67 49 76 51 61 53 62 61 38 43 34 49 42 32 57 60 42 43 36 29 23 27 23 27 38 -6 29 26 16 54 25 45 15 22 31 17 57 28 25 35 36 -8 16 15 19 19 27 -11 48 13 1 -5 35 -27 -20 31 7 29 22 16 14 -15 -15 10 -14 16 -15 22 13 -16 15 -7 -26 -17 -7 -16 -19 -23 -18 -25 27 -8 -19