"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   56.36097
        63,   57.39817
       125,   52.24514
       250,   45.29751
       500,   55.39533
      1000,    54.3473
      2000,   54.02082
      4000,   48.69487
      8000,   30.68678
     16000,   19.67659