% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 198 141 105 87 118 32 171 289 81 134 139 118 140 135 312 361 148 129 215 145 147 103 132 95 63 124 63 76 77 85 38 57 82 44 76 60 102 46 70 -11 47 29 -30 -55 28 -22 23 -43 38 -29 48 25 45 73 85 56 91 69 72 91 53 64 42 27 38 35 47 73 52 86 85 115 21 60 52 -11 75 87 34 33 35 17 51 43 25 -19 44 -34 65 48 62 49 -10 29 68 37 43 41 -35 -20 -17 22 23 -6 35 17 29 -35 -46 -17 25 -35 -46 46 14 -15 14 42 28 -7 11 -19 25 25 -50 57 28 -45