"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   54.22456
        63,   54.46229
       125,   47.08966
       250,   45.46732
       500,    57.0954
      1000,   53.18931
      2000,   53.36909
      4000,   53.19282
      8000,   36.84698
     16000,   24.61576