% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 213 160 158 71 82 126 111 86 103 200 359 195 268 235 265 216 167 220 195 245 294 172 79 168 123 117 152 138 115 88 113 105 90 125 76 66 72 51 65 104 116 61 160 80 111 72 92 111 100 97 79 134 113 63 75 66 87 52 76 127 82 66 69 109 106 61 71 113 91 54 97 82 72 80 66 83 94 67 61 47 61 50 73 57 70 23 58 34 54 13 62 55 -11 67 43 20 41 -16 50 39 25 49 -21 -34 -28 33 30 19 -17 52 17 39 -32 5 -28 -12 -25 -44 6 -39 -21 -32 -27 -33 -12 31 -27 19