"IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,    6.26017
      31.5,   14.60493
        63,   26.76247
       125,   35.59467
       250,   37.20363
       500,    40.9227
      1000,   45.00934
      2000,   49.68949
      4000,   46.68593
      8000,   45.06902
     16000,   49.21868
