"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   59.07294
        63,    61.4606
       125,   55.55144
       250,   59.23244
       500,   73.15266
      1000,    72.2458
      2000,   57.37432
      4000,   47.31816
      8000,   38.16552
     16000,   28.71247