"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   60.96054
        63,   59.02383
       125,   54.99071
       250,    51.5218
       500,   57.77425
      1000,   77.66895
      2000,   52.97963
      4000,    41.6848
      8000,   35.67773
     16000,   23.29203