"IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,   1.831974
      31.5,   11.66171
        63,   23.49046
       125,   33.18295
       250,    34.6931
       500,   35.41845
      1000,   32.98776
      2000,    34.0042
      4000,   30.07531
      8000,   26.33558
     16000,   23.85123
