% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 447 195 139 72 87 109 60 111 90 178 146 152 361 530 396 300 214 125 169 103 138 127 115 125 138 182 116 90 24 102 68 89 138 94 114 78 81 107 94 60 64 52 77 94 54 -9 18 32 32 22 -19 34 75 -30 13 -25 -44 60 54 19 -47 -32 -48 -36 45 35 -26 -34 -35 27 -28 13 -17 -35 -60 26 -35 34 -40 -34 -40 23 26 -31 27 23 43 30 12 39 35 17 -30 -33 24 -12 14 36 17 30 33 44 -32 10 -15 3 37 19 15 -39 39 55 23 -32 46 -39 62 -24 -54 -59 -39 -17 -21 -6 -20 58 -21 -37