"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.25739
        63,   57.79204
       125,   51.63044
       250,   47.23587
       500,   56.22665
      1000,    67.5413
      2000,   54.79174
      4000,   38.29065
      8000,   38.51463
     16000,    19.4718