% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 151 98 94 90 67 90 65 71 228 204 226 285 198 278 241 346 327 242 191 214 87 119 100 84 24 67 61 33 18 35 18 18 -7 -4 -27 -30 -28 -19 -30 -31 -22 -33 -28 -38 -28 -37 -30 -30 -32 -29 -27 -34 -32 -30 -29 -37 -33 -29 -29 -32 -16 -26 -30 -32 -26 -26 -30 -31 -36 -33 -28 -28 -33 -32 -26 -24 -29 -30 -23 -28 -26 -30 -27 -22 -32 -27 -36 -28 -24 -28 -37 -25 -26 -27 -30 -29 -24 -18 -17 -31 -21 -28 -26 -26 -25 -21 -24 -24 -20 -19 34 9 33 -12 -19 -20 11 22 20 31 7 23 21 23 8 46 20 43