"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   56.45249
        63,   51.92998
       125,   43.99464
       250,   50.92892
       500,   73.41701
      1000,   66.42165
      2000,   55.27028
      4000,     50.328
      8000,   31.40986
     16000,   25.38861