"IEC 1/1-Oct Mag - dB volts (re:1.81E-006)"
      "Hz"      "Data"
        16,   38.46294
      31.5,   42.38925
        63,   43.84123
       125,   49.34567
       250,   49.03235
       500,   47.33429
      1000,   42.35433
      2000,   47.97542
      4000,   44.75999
      8000,   39.19218
     16000,   36.41144