"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   49.34262
        63,   50.16255
       125,   44.87277
       250,    37.7995
       500,    51.7257
      1000,   49.39042
      2000,   50.72532
      4000,   45.74777
      8000,   30.86007
     16000,   21.33675