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Table 1 Characteristics of the used light sources

From: The effect of a blue enriched white light on salivary antioxidant capacity and melatonin among night shift workers: a field study

Light source Correlated colour temperature (K) Illuminance on the work plane (in lx)a Chromaticity coordinates 1931 CIE 28 (x, y)
Fluorescent (18 W) 3000 k 510 0.453, 0.397
Fluorescent (18 W) 6500 k 501 0.447, 0.422
Fluorescent (18 W) 17,000 k 506 0.450, 0.440
  1. aMean illuminance levels