"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   60.70523
        63,   57.80023
       125,    51.8575
       250,   48.15361
       500,   67.58212
      1000,   67.03188
      2000,   50.15707
      4000,   45.21914
      8000,   25.43432
     16000,   19.03047