"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.86665
        63,   50.20026
       125,   45.19063
       250,   38.68985
       500,    52.2676
      1000,   49.15072
      2000,   48.03577
      4000,   39.20042
      8000,   28.81181
     16000,   19.71105