Table 1.

Photometric properties of the 3 illuminance conditions

Photometric property	Dark	Red	Blue
Peak wavelength, nm	—	624	475
Full width at half maximum, nm	—	18	25
Number of photons/cm2/s	0	1.6 × 1013	1.6 × 1013
Illuminance, lux	0	9.2	8.0
Irradiance, W/m2	0	5.0 × 10−2	6.6 × 10−2