% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 63 83 68 33 47 55 63 72 49 106 79 94 111 88 165 105 75 92 80 91 78 88 76 100 183 138 123 170 186 139 83 106 100 91 86 61 23 31 38 65 17 14 74 23 16 -38 -40 38 -21 10 33 -8 30 30 -37 -48 -40 -6 -31 -46 29 22 -51 -24 62 36 -34 48 23 -59 -51 -46 -53 -54 -41 -50 -33 -27 -54 -12 -35 -32 -42 -39 -31 -46 25 -15 29 -46 -33 10 -8 54 21 -16 -11 28 31 20 -35 58 44 -33 39 47 -5 -32 -21 -28 19 -14 29 -46 21 -31 43 -21 14 23 -30 -26 7 -42 29 -32 -48 31