. 2021 Jul 6;11(7):2017. doi: 10.3390/ani11072017

Table 2.

Cluster index for each treatment between the levels of the variables: period of the day, production cycle, and thermal comfort.

		Treatment
		Blue	Green	Red
Period of day	Morning	3.16 ^Ab	3.15 ^Ab	6.18 ^Aa
Period of day	Afternoon	2.82 ^Bb	2.54 ^Bb	2.96 ^Ba
Comfort	Cold Stress	3.07 ^b	2.64 ^Bc	4.66 ^Aa
	Comfort	2.98 ^b	2.92 ^Ac	4.79 ^Aa
	Heat Stress	2.91 ^b	2.98 ^Ab	4.26 ^Ba

Lowercase letters ⁽^a,b) indicate differences between the lighting treatments (columns) and uppercase letters ^(A,B) indicate differences between the lines of the same variable, by the Tukey test at 5% significance.