"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   60.31366
        63,   57.90022
       125,   51.21051
       250,   48.91433
       500,   55.97673
      1000,   68.34492
      2000,   47.23136
      4000,   33.26676
      8000,   29.05199
     16000,   20.19005