"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,    61.6265
        63,   58.35732
       125,   47.02003
       250,   46.62803
       500,   50.71291
      1000,   50.26495
      2000,   47.26692
      4000,   46.67265
      8000,   35.23965
     16000,   22.40051