"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   54.24194
        63,   55.37687
       125,   47.54487
       250,   42.03663
       500,   54.00447
      1000,   81.40711
      2000,   54.25986
      4000,   45.20913
      8000,    36.1496
     16000,   23.37265