CCT panel  SPD Data
  Spectral power distribution (or abbreviated as SPD) represents the distribution of the energy radiated at different wavelengths in the visible part of the light spectrum.  Below graphs show the SPD data at different color temperatures.  Warm white color (3000K CCT) contains about 50% less blue color wavelength than the cool white color (5000K CCT).  Alternatively, warm white color (3000K CCT) contains about 100% more red color wavelength than the cool white color (5000K CCT).  
     
   
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