Study on the Influence of LED Spectrum on the Visual and Nonvisual Effects in the Interior Zone of Tunnels

Table 3

value of significance analysis for the above factors.

Parameters	CCT	CRI	Luminance	Experimental duration
r	−0.335	−0.222	−0.804	0.350
	0.002	0.008	≤0.001	≤0.001

Correlation is significant at the 0.01 level (2-tailed).