"IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,   1.876898
      31.5,   12.70949
        63,   25.32775
       125,   34.45657
       250,   34.79229
       500,   37.37205
      1000,   39.89806
      2000,   42.46334
      4000,   39.33815
      8000,   40.98431
     16000,   41.00621
