"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   52.88375
        63,   51.57359
       125,   46.02478
       250,   57.73153
       500,   72.11103
      1000,   70.71262
      2000,   58.46861
      4000,   47.10236
      8000,   35.64914
     16000,   20.03204