"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.71337
        63,   52.82365
       125,   47.23388
       250,   44.70675
       500,   56.81582
      1000,   50.88132
      2000,   44.80194
      4000,    39.0537
      8000,    27.8476
     16000,   28.91157