"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   52.86226
        63,   56.06076
       125,    50.7753
       250,   58.12593
       500,   73.58772
      1000,   70.18272
      2000,   57.91609
      4000,   50.94897
      8000,   40.91686
     16000,   25.97809