"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   52.67371
        63,   54.92367
       125,   49.72252
       250,    58.6345
       500,   74.72305
      1000,   70.26099
      2000,   60.58344
      4000,    53.7249
      8000,    42.2894
     16000,   30.13683