"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.81297
        63,   54.45033
       125,   49.85778
       250,   57.51794
       500,   70.82488
      1000,   70.08266
      2000,   56.56315
      4000,   46.35722
      8000,   31.35627
     16000,   19.40931