% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 255 256 234 146 96 74 92 59 100 113 141 241 210 358 776 890 762 533 776 587 225 337 228 282 350 207 221 240 147 114 187 158 126 164 80 77 75 85 63 58 13 36 49 43 41 -24 53 -17 42 42 19 -20 17 -26 16 18 -28 22 6 -13 31 -26 30 -22 16 14 -23 -22 -24 -18 4 -13 -18 32 31 34 -19 -10 -4 13 -30 24 36 -14 -14 -16 -20 -28 -23 -28 -9 -18 -6 -28 -32 9 -26 -4 19 0 -23 4 -30 9 15 -19 10 -25 -22 -33 -20 16 -20 28 34 -19 30 -14 30 -7 3 -31 24 13 18 26 -8 20