"IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,   0.650193
      31.5,   11.92119
        63,   24.53609
       125,   33.81951
       250,   33.98272
       500,   35.70557
      1000,   38.25238
      2000,   40.32053
      4000,   35.85545
      8000,   36.86025
     16000,   36.38363
