"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   58.16954
        63,   54.99408
       125,   50.38093
       250,   40.45972
       500,   56.41402
      1000,   54.14946
      2000,   52.47482
      4000,      46.87
      8000,   32.58401
     16000,   25.17816