% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 125 65 55 65 53 39 43 40 115 118 98 95 129 231 227 183 275 148 205 169 168 215 177 131 153 148 107 104 89 88 95 100 72 81 111 64 63 92 147 62 84 90 103 67 111 109 135 114 90 90 49 33 81 44 34 61 24 61 72 71 46 20 57 21 23 47 45 60 70 9 93 40 49 44 56 73 14 3 45 51 56 29 30 6 36 5 28 38 17 23 37 19 27 -21 25 60 12 -22 17 -22 -28 30 -6 -36 -5 -19 25 -20 -9 -23 -24 -31 40 32 39 26 25 38 48 -36 -22 19 -31 -29 -24 -29 36 -28