"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   56.62616
        63,   55.99458
       125,   45.10467
       250,   57.23033
       500,   70.89352
      1000,   72.62096
      2000,   53.98719
      4000,   47.76662
      8000,   28.34766
     16000,   18.34455