"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   51.90771
        63,    50.0147
       125,   42.78073
       250,   57.36999
       500,   72.38963
      1000,   70.58887
      2000,    58.5516
      4000,   50.19376
      8000,   38.22954
     16000,   23.82294