"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   54.24128
        63,   55.52386
       125,   53.25978
       250,   43.29285
       500,   57.07766
      1000,   53.61254
      2000,   50.33078
      4000,   51.28536
      8000,   34.27306
     16000,   22.88227