"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.19073
        63,   55.47553
       125,   51.42154
       250,   51.67353
       500,   52.31228
      1000,   67.72431
      2000,   45.97566
      4000,   38.31882
      8000,   25.49811
     16000,   20.35904