"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.29565
        63,   55.26804
       125,   49.92496
       250,   45.86229
       500,   57.17817
      1000,   73.49282
      2000,   52.30601
      4000,   39.94717
      8000,   40.39739
     16000,   26.05545