"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   58.77768
        63,   57.62998
       125,   52.29302
       250,   48.27452
       500,   58.13904
      1000,   74.23822
      2000,   50.59657
      4000,   38.26639
      8000,   34.82288
     16000,   26.53978