"IEC 1/1-Oct Mag - dB volts (re:1.81E-006)"
      "Hz"      "Data"
        16,   27.50001
      31.5,   39.95384
        63,   36.32901
       125,   42.76155
       250,   39.91533
       500,    35.5473
      1000,   38.83096
      2000,    42.3158
      4000,   44.08472
      8000,   31.91329
     16000,   14.72945