% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 131 94 91 86 55 30 66 55 50 -31 52 80 81 201 240 355 215 122 244 82 158 86 111 77 83 93 71 66 -16 57 70 60 34 101 123 154 133 66 167 166 187 138 151 91 178 133 80 98 133 119 91 30 94 90 110 50 71 65 62 60 67 103 84 109 64 54 59 42 107 81 81 97 51 52 78 27 60 44 44 49 37 74 48 60 24 68 47 7 31 -5 45 23 9 20 35 31 17 -23 23 32 4 12 28 -36 -22 -17 11 -27 21 -19 -29 19 11 -8 -29 24 -11 27 -5 12 20 20 -4 -6 -27 22 29 -11