"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   60.42489
        63,   60.62379
       125,   56.04766
       250,   48.08949
       500,   55.12192
      1000,   58.38387
      2000,   52.09398
      4000,   48.69676
      8000,   37.73746
     16000,   26.82396