"IEC 1/1-Oct Mag - dB volts (re:1.81E-006)"
      "Hz"      "Data"
        16,   33.28352
      31.5,   38.74218
        63,   36.82956
       125,   43.28561
       250,   41.04633
       500,   38.85185
      1000,    44.7697
      2000,   43.75542
      4000,   45.00551
      8000,   36.57312
     16000,   22.33021