"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.61117
        63,    55.9544
       125,   47.53182
       250,   40.42139
       500,   54.23355
      1000,   48.99769
      2000,   51.90578
      4000,   52.62055
      8000,    38.2749
     16000,   23.15988