% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 176 103 90 66 -11 56 14 73 33 89 17 100 166 223 375 352 410 146 399 204 191 144 207 241 207 132 209 172 80 105 109 193 143 139 107 80 98 125 50 76 78 91 103 74 85 91 69 61 50 17 27 25 77 55 51 49 81 70 33 66 77 31 86 29 85 83 89 67 88 70 76 60 55 74 47 108 41 103 84 51 -35 84 76 60 43 78 44 51 49 51 25 65 69 45 57 45 -37 -21 -15 50 48 39 9 -39 56 22 25 -11 12 -18 56 -9 10 -28 -22 -33 -1 -42 -30 17 -29 -19 -28 20 -22 18 -37 -25