"IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,    4.58383
      31.5,   14.16682
        63,   26.48368
       125,   35.31723
       250,   36.67092
       500,   40.20093
      1000,   44.02684
      2000,   48.31525
      4000,   46.21164
      8000,   45.52859
     16000,   45.63573
