The R9 Value for the 3000K Cree CR24 is 80 which adds to the
industry leading CRI of +90. A link to
the energy study is below.
Energy.Gov Study
Per the DOE website,
"A good CRI score does not guarantee good color quality
One problem with the CRI is that it can give fairly high scores to sources that render some saturated object colors very poorly. An example below shows a case of a red-green-blue (RGB) white LED simulation optimized for highest luminous efficacy of radiation (LER, lm/W) at CRI R
a=80. This light would qualify for Energy Star and achieve high luminous efficacy2, but the actual color rendering is very poor. With R9 = -114, skin tones under this light look pale and unhealthy. "
http://crseries.creeledlighting.com/collateral/cr-troffer-brochure.pdf
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