% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 59 92 87 74 63 26 6 38 37 59 100 100 325 901 1034 813 1143 927 759 386 551 394 240 371 325 203 341 335 350 143 199 284 209 237 236 214 233 215 198 190 182 272 260 243 205 159 103 99 237 150 120 160 194 175 115 131 125 127 94 157 93 104 91 100 94 85 91 80 83 122 86 114 74 63 58 81 90 68 79 39 79 45 75 34 59 68 65 56 60 16 36 47 36 37 54 -23 50 43 -7 30 23 -35 -32 -21 31 -21 25 -26 -28 27 55 -31 8 -15 -19 -12 -42 -30 -36 -11 -18 -22 -17 21 15 -41 13 33