"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.58167
        63,   58.00879
       125,   51.89518
       250,   47.84907
       500,   52.23469
      1000,   51.88344
      2000,   51.92358
      4000,   44.70412
      8000,   32.93636
     16000,   21.45591