% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 144 136 149 107 89 60 38 66 60 54 63 147 445 405 487 485 315 390 380 207 263 193 76 196 153 159 114 99 73 59 92 94 89 151 68 84 97 73 125 98 216 92 111 147 172 160 107 210 101 148 98 170 148 94 125 107 71 119 124 85 65 71 72 68 102 91 97 77 63 93 84 102 85 57 104 68 58 37 57 78 41 48 51 26 54 18 36 59 45 23 -19 -22 54 32 -23 -7 38 47 30 33 -18 -28 -32 10 -19 -19 -11 -23 -25 43 -14 28 7 7 37 -34 -33 -15 -27 -30 -26 15 16 -24 -24 -30 24 20