% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 87 66 74 33 7 -18 15 24 35 65 53 58 72 108 112 208 156 179 211 176 143 126 138 131 110 78 69 34 45 66 61 -10 41 42 47 -7 -25 -16 -31 -18 -25 -31 -30 -33 -16 -36 -26 -37 -37 -38 -33 -36 -26 -35 -31 -32 -34 -37 -34 -31 -39 -32 -29 -38 -35 -31 -31 -40 -39 -35 -34 -29 -33 -39 -32 -28 -31 -23 -35 -31 -34 -35 -34 -29 -18 -14 -1 -24 -26 32 -28 -17 -13 32 29 33 9 -5 -17 5 -20 20 -12 -14 11 -12 -15 29 38 28 -8 18 -20 22 -18 27 15 -7 20 -12 -8 12 5 3 -28 17 -19 -16